Be able to understand the processes which occurred during the last ice age.
|
|
- Ashley Powers
- 6 years ago
- Views:
Transcription
1 Glaciation Learning Intentions Be able to understand the processes which occurred during the last ice age. Be able to describe and explain the formation of features formed during glacial periods. 1
2 Water enters crack Processes Of Weathering Freeze-Thaw Ice freezes and exerts pressure from inside rock Rock breaks up over time 2
3 3
4 Conditions and processes which encourage the formation of scree slopes. Steep and bare rock faces with lines of weakness/well-jointed carboniferous limestone. Cold climate where temperatures often fall below freezing point at night. The two factors above allow physical weathering to take place in the form of freeze-thaw action/frost shattering, where water collects in the rock fractures, freezes and expands by about 9% exerting great pressure on even the hardest rock. Repeated freeze-thaw action splits the rock into large sharp fragments which break off and are moved downhill by gravity to accumulate at the base of steep slopes as a scree or talus slope as large heaps of rock debris. Biological weathering Root wedging Animals burrows 4
5 Processes Of Erosion Plucking Water can enter cracks in the rock and freeze, as it does so it freezes the glacier and rock together. As the glacier moves it literally pulls the rock out and is likely to occur more when temperatures fluctuate around 0ºC. 5
6 Processes Of Erosion Plucking LITHOSPHERE The water from this process often comes from the friction between ice moving over rock. Another source of the water is a result of melting of the ice; during the day it melts, but refreezes at night. Plucked Rock 6
7 Processes Of Erosion Abrasion This is when rock under the ice or stuck in the bottom of it, scrape away at the surface of the bed rock surface. The rock comes from the debris produced by Freeze Thaw and Plucking. The bedrock is scratched, polished, smoothed and eventually worn away by the scouring action. 7
8 Processes Of Erosion Abrasion Striations or scratches can be left on the rock 8
9 Features of erosion CORRIES Snow collects in hollows, especially on the less sunny north and east facing slopes, turns to glacial ice and moves downwards under the force of gravity Rocks are plucked out and the hollow is widened by abrasion to become a corrie. A corrie is a deep, rounded hollow with a steep back wall. 9
10 Corries Task 3 Q2 LITHOSPHERE Match the letters to the descriptions. Flat Base Horse shoe shape Steep sides b a c d Cliffs/ Outcrops/Scree
11 S N Layers Ice Hollow Corrie Development 1
12 Corrie Formation Stage 1 Snow collects in hollows high up in the mountains, usually in north facing slopes. Pressure causes the lower layers of ice to turn to ice. Gravity and reduced friction cause the ice to move downhill. The hollow in which the snow and ice collected is eroded by the ice to form a much deeper, steeper hollow called a Corrie. 12
13 Corrie Development 2 LITHOSPHERE FT PL RS L AB
14 Corrie Formation Stage 2 As meltwater under the ice seeps into cracks the rock in the hollow is weathered by freeze thaw action. Then when the meltwater freezes onto the rock plucking takes place. The backwall and sidewalls of the hollow are eroded quickly by these two processes. Abrasion due to rocks taken in by frost shattering and plucking deepens the hollow. The glacier slips in a rotating movement, which means that it is eroding the most at the back wall and base. So with less erosion at the base so a lip starts to form, which has deposits of rocks left on it by the glacier 14
15 Corrie Development 3 LITHOSPHERE Lip Scree Lochan
16 Corrie Formation Stage 3 When the ice melts a corrie can clearly be seen. It is an armchair shaped hollow in the mountainside with steep sidewalls and steep backwall and a flat base. Sometimes after glaciation, corries fill with meltwater to form corrie lochs or tarns. 16
17 Features of erosion Formation of a corrie 17
18 Features of erosion Back wall scree lip Once the glacier retreats, the corrie may be filled with water. A small, generally circular loch is formed. This is known as a tarn or corrie lochan. 18
19 Features of erosion Red Tarn 19
20 Features of erosion ARETE An arete is a narrow, sharp-edged ridge which forms the side walls of corries or separates different glacial valleys. 20
21 Arete Formation Aretes are formed when two corries are found back to back or side by side in the mountain area. Plucking and freeze thaw action erode the backwalls of both corries towards each other. The land between them gets narrower and narrower until all that remains is a steep knife-edged ridge of rock. 21
22 Features of erosion Striding Edge Striding Edge arete on Helvellyn, Lake District 22
23 Features of erosion MATTERHORN Pyramidal peaks are also called horns. 23
24 Pyramidal Peak Diagram Of Pyramidal Peak Erosion Pyramidal Peaks b c c a
25 Pyramidal Peak Formation Found where 3 or more corries are located in the same mountainside. Plucking and freeze-thaw action of the backwalls of each corries occurs to such an extent that the rounded summit is eroded into a sharp peak or point. The rock erodes back so that the mountain becomes steeper and the three corrie walls come close enough to converge This leaves a pointed and jagged (freeze thaw) peak eg. The Eiger (The Alps) 25
26 Deep valley LITHOSPHERE b U Shaped Valley d Steep sides a Straight valley c Loch in wide valley
27 U-shaped Valley Misfit Steam 27
28 U-shaped Valley Ribbon Lake 28
29 Features of erosion A VALLEY GLACIER The next few slides will help to explain the formation of this feature. 29
30 U Shaped Valleys Ice starts to flow out of corries or off ice caps It flows down V shaped river valleys
31 Ice moves down river valley Usual erosion occurs Abrasion deepens Plucking erodes sides back Glacier also bulldozes rock out of the way U shaped valley develops
32 U-shaped valley formation When a glacier erodes its valley, a classic U shape is formed, the side walls tend to be steep and possibly curving inwards at the base, and the valley floor almost flat. U shaped valleys start life as V shaped river valleys that existed before glaciation. Ice moves down the V shaped valley and glaciers erode it and change its shape as the ice moves. Plucking and freeze-thaw action truncate spurs of rock and steepen the valley sides and abrasion deepens and flattens the valley floor. Over time the valley also becomes straighter. 32
33 Misfit Stream After glaciation when the ice melts, the river which originally flowed on the floor of the V-shaped valley may once again begin to flow through the U-shaped valley. It is now called a Misfit Stream. It is so called because it looks out of place in the now large valley and also because it did not contribute to its formation. 33
34 Ribbon Lake At some points in the U-shaped valley, glaciers erode more deeply than elsewhere. This might have been because the rock was softer and more easily eroded or because the ice was thicker at this point and therefore more powerful. Where ice did this, it would create an overdeepened hollow which after glaciation filled with meltwater to become a Ribbon Lake. The lake takes on the same shape as the valley in which it was formed so tends to be long and quite narrow. 34
35 Truncated Spurs LITHOSPHERE Truncated Spur Steep Cliffs Overlooking U shaped valleys Often Scree collects underneath
36 Truncated Spurs LITHOSPHERE Bulldozed by glaciers Abrasion & plucking help with erosion Post glaciation freeze-thaw has created more scree below
37 Truncated Spurs LITHOSPHERE l Cliff Face Scree k m Steep Sides U Shaped Valley
38 These are deep U shaped valleys formed by the erosion of valley glaciers As glaciers emerge from the lip of their corries they merge and form a more powerful glacier which erodes more readily They follow the course of former V shaped river valleys As they progress down the valley through their own weight (gravity) they erode like a corrie glacier The top of the valley sides are eroded by freeze thaw weathering, mid height of the valley by plucking and the base by abrasion This means that the former V shaped valley will widen, steepen and deepens When a U shaped valley cuts across a water shed it is called a glacial breech The interlocking spurs of the river valley literally have their noses cut off by the ice, leaving a ridge descending into the valley which suddenly steepens, sometimes into an outcrop or a cliff face The steepest part of the valley is often at the trough head (start) where the descending corrie glaciers move quickly under gravity. Other more eroded points tend to be a result of the glacier moving over weaker rock which abrades readily, deepening the base This over deepening can fill in with water leaving a ribbon loch eg, Loch Avon (Cairngorms)
39 Features of erosion Stages in the formation of a U-shaped valley 39
40 Features of erosion A U-shaped valley in Canada. 40
41 When a glaciated valley by the coast is submerged or drowned by a rise in sea level, a fiord is formed. Features of erosion The sea lochs of western Scotland are the best examples of fiords in the British Isles. Fiord/fjord 41
42 Features of erosion A hanging valley Vertical erosion in the main glacier is far greater than in the tributary glaciers. So the valleys are not the same depth. After the glacier has retreated, rivers flowing down the tributary join the main valley via a waterfall Can you spot the river delta,too? 42
43 Features of erosion U-shaped valleys have few contours on their floors. Note the very steep sides. Truncated spur There is a hanging valley here. waterfall Misfit stream 43
44 Features of erosion When a glacier moves along the valley, some parts are deepened more than others. When the glacier retreats, the deepest parts fill with water and become lakes. Ribbon lakes The English Lake District owes its character to these narrow ribbon lakes along its valley floors. 44
45 Erosion/ deposition An alluvial fan alluvium = silt deposited by a river Caused when a stream falling from a side valley reaches flatter ground on the valley floor. Material is dropped at the break of slope to form this fan shape. (This is really a depositional feature.) 45
46 Erosion/ deposition A crag and tail Edinburgh Castle Plug of volcanic rock tail These are partly erosional, partly depositional features. The rock face facing the ice is steepened by glacial erosion. Softer rock on the other slope is protected from erosion to form a tail of boulder clay. 46
Lithosphere Features Of Glacial Erosion. Corrie;
Corrie; Lithosphere Features Of Glacial Erosion These are bowl like hollows in the sides of mountains formed by glacial erosion A small hollow on the side of a mountain will start to fill with snow all
More informationMatch up the pictures and key terms
Match up the pictures and key terms 1 Plucking Striations 3 Roche Mountonnees 2 Chatter Marks 4 What is the difference between plucking and abrasion? Glacial Processes Erosion, Weathering and Deposition
More informationWeathering, Erosion and Deposition
Weathering, Erosion and Deposition Shaping the Earth s Surface Weathering the process of breaking down rocks into smaller fragments Erosion the transport of rock fragments from one location to another
More informationTopic 6: Weathering, Erosion and Erosional-Deposition Systems (workbook p ) Workbook Chapter 4, 5 WEATHERING
Topic 6: Weathering, Erosion and Erosional-Deposition Systems (workbook p. 95-125) Workbook Chapter 4, 5 THE BIG PICTURE: Weathering, erosion and deposition are processes that cause changes to rock material
More information1. Any process that causes rock to crack or break into pieces is called physical weathering. Initial product = final product
Weathering 1. Any process that causes rock to crack or break into pieces is called physical weathering. Initial product = final product End Result of physical weathering is increased surface area. 2. Physical
More informationChapter 2. Wearing Down Landforms: Rivers and Ice. Physical Weathering
Chapter 2 Wearing Down Landforms: Rivers and Ice Physical Weathering Weathering vs. Erosion Weathering is the breakdown of rock and minerals. Erosion is a two fold process that starts with 1) breakdown
More informationChapter 3 Erosion and Deposition. The Big Question:
Chapter 3 Erosion and Deposition The Big Question: 1 Design a way to represent and describe the 4 types of mass movement. You may use pictures, diagrams, list, web, chart, etc 2 Chapter 3: Erosion and
More informationEssential Questions. What is erosion? What is mass wasting?
Erosion Essential Questions What is erosion? What is mass wasting? What is Erosion? Erosion The transportation of sediment from one area to another Caused mainly by running water but also caused by glaciers,
More informationWhat are the different ways rocks can be weathered?
Romano - 223 What are the different ways rocks can be weathered? Weathering - the breakdown of rocks and minerals at the Earth s surface 1. 2. PHYSICAL WEATHERING Rock is broken into smaller pieces with
More informationAmazing Ice: Glaciers and Ice Ages
Amazing Ice: Glaciers and Ice Ages Updated by: Rick Oches, Professor of Geology & Environmental Sciences Bentley University Waltham, Massachusetts Based on slides prepared by: Ronald L. Parker, Senior
More informationChapter 2. Denudation: Rivers and Ice
Chapter 2. Denudation: Rivers and Ice DENUDATION: process that lowers level of land - caused by rivers, glaciers, waves & wind - involves processes of WEATHERING & EROSION Weathering Def: breakdown of
More informationHow do glaciers form?
Glaciers What is a Glacier? A large mass of moving ice that exists year round is called a glacier. Glaciers are formed when snowfall exceeds snow melt year after year Snow and ice remain on the ground
More informationBell Ringer. Are soil and dirt the same material? In your explanation be sure to talk about plants.
Bell Ringer Are soil and dirt the same material? In your explanation be sure to talk about plants. 5.3 Mass Movements Triggers of Mass Movements The transfer of rock and soil downslope due to gravity is
More informationPrentice Hall EARTH SCIENCE
Prentice Hall EARTH SCIENCE Tarbuck Lutgens Chapter 7 Glaciers, Desert, and Wind 7.1 Glaciers Types of Glaciers A glacier is a thick ice mass that forms above the snowline over hundreds or thousands of
More information1/6/ th Grade Earth s Surface. Chapter 3: Erosion and Deposition. Lesson 1 (Mass Movement)
Lesson 1 (Mass Movement) 7 th Grade Earth s Surface Chapter 3: Erosion and Deposition Weathering the chemical and physical processes that break down rock at Earth s surface Mechanical weathering when rock
More informationWeathering, Erosion, Deposition
Weathering, Erosion, Deposition The breakdown of rocks at or near the Earth s Surface. Physical Chemical - The breakdown of rock into smaller pieces without chemical change. - Dominant in moist /cold conditions
More informationLecture 10 Glaciers and glaciation
Lecture 10 Glaciers and glaciation Outline Importance of ice to people! Basics of glaciers formation, classification, mechanisms of movement Glacial landscapes erosion and deposition by glaciers and the
More informationTHE ACTION OF GLACIERS
Surface processes THE ACTION OF GLACIERS Glaciers are enormous masses of ice which are formed due to accumulation, compaction and re-crystallisation of the snow deposited in very cold regions (the majority
More informationEROSION AND DEPOSITION
CHAPTER 8 EROSION AND DEPOSITION SECTION 8 1 Changing Earth s Surface (pages 252-255) This section explains how sediment is carried away and deposited elsewhere to wear down and build up Earth s surface.
More informationEARTH S CHANGING SURFACE
EARTH S CHANGING SURFACE Weathering Together, weathering and erosion work continuously to wear down the material on Earth s surface. weathering process that breaks down rock and other substances of Earth
More information3 Erosion and Deposition by Ice
CHAPTER 12 3 Erosion and Deposition by Ice SECTION Agents of Erosion and Deposition BEFORE YOU READ After you read this section, you should be able to answer these questions: What are glaciers? How do
More informationGlaciers. (Shaping Earth s Surface, Part 6) Science 330 Summer 2005
Glaciers (Shaping Earth s Surface, Part 6) Science 330 Summer 2005 1 Glaciers Glaciers are parts of two basic cycles Hydrologic cycle Rock cycle Glacier a thick mass of ice that originates on land from
More information4. The map below shows a meandering stream. Points A, B, C, and D represent locations along the stream bottom.
1. Sediment is deposited as a river enters a lake because the A) velocity of the river decreases B) force of gravity decreases C) volume of water increases D) slope of the river increases 2. Which diagram
More informationGlaciers Earth 9th Edition Chapter 18 Glaciers: summary in haiku form Key Concepts Glaciers Glaciers Glaciers Glaciers
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Earth 9 th Edition Chapter 18 : summary in haiku form Ten thousand years thence big glaciers began to melt - called "global warming." Key Concepts and types of glaciers.
More information1. Which type of climate has the greatest amount of rock weathering caused by frost action? A) a wet climate in which temperatures remain below
1. Which type of climate has the greatest amount of rock weathering caused by frost action? A) a wet climate in which temperatures remain below freezing B) a wet climate in which temperatures alternate
More informationChapter 5: Glaciers and Deserts
I. Glaciers and Glaciation Chapter 5: Glaciers and Deserts A. A thick mass of ice that forms over land from the compaction and recrystallization of snow and shows evidence of past or present flow B. Types
More information1. The diagram below shows the stump of a tree whose root grew into a small crack in bedrock and split the rock apart.
1. The diagram below shows the stump of a tree whose root grew into a small crack in bedrock and split the rock apart. 4. Which process involves either a physical or chemical breakdown of earth materials?
More informationRead Across America. Listen as I read for facts about Volcanoes. In the Shadow of the Volcano
Read Across America Listen as I read for facts about Volcanoes. In the Shadow of the Volcano Constructive & Destructive Processes Earth s surface is always changing. Blowing wind and flowing water causes
More informationEarth s Dynamic Surface
Earth s Dynamic Surface Key Concepts What is the difference between physical and chemical weathering? How do water, ice, and wind change Earth s surface? Changing Earth s Surface What do you think? Read
More informationUnit 3 Review - Surface Processes
Unit 3 Review - Surface Processes 1. Why is the surface of Mercury covered with meteor impact craters, while Earth s surface has relatively few craters? A) Mercury is larger than Earth, so it gets hit
More informationAreal Scour vs. Selective Linear Erosion
Erosional Forms and Landscapes Erosional Landscapes Areal Scour vs. Selective Linear Erosion Cirques Form and Morphology Many Forms Red Tarn Cirque Basin English Lake District Red Tarn Cirque Basin, English
More informationChapter 9 Notes: Ice and Glaciers, Wind and Deserts
Chapter 9 Notes: Ice and Glaciers, Wind and Deserts *Glaciers and Glacial Features glacier is a mass of ice that moves over land under its own weight through the action of gravity Glacier Formation must
More information1. Erosion by Running Water Most powerful cause of erosion
I. Destructive Forces Notes: Destructive force: a process in which land is destroyed or changed such as weathering and erosion. All landforms are a result of a combination of constructive and destructive
More informationWhat factors affect the angle of a slope?
Climate Rock type and Structure What factors affect the angle of a slope? Aspect Fast mass movements Slides: Slides are movements along the SLIP PLANE, i.e. a line of weakness in the rock or soil structure.
More informationLecture Outlines PowerPoint. Chapter 6 Earth Science 11e Tarbuck/Lutgens
Lecture Outlines PowerPoint Chapter 6 Earth Science 11e Tarbuck/Lutgens 2006 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for the use of instructors
More informationWhich landscape best represents the shape of the valleys occupied by glaciers? A) B) C) D)
1. Glaciers often form parallel scratches and grooves in bedrock because glaciers A) deposit sediment in unsorted piles B) deposit rounded sand in V-shaped valleys C) continually melt and refreeze D) drag
More informationErosion and Deposition
Erosion and Deposition Erosion Sediment natural forces move rock/soil from one place to another. gravity, water, wind, glaciers, waves are causes material moved by erosion Deposition when erosion lays
More informationMASS MOVEMENTS, WIND, AND GLACIERS
Date Period Name MASS MOVEMENTS, WIND, AND GLACIERS SECTION.1 Mass Movements In your textbook, read about mass movements. Use each of the terms below just once to complete the passage. avalanche creep
More informationPratice Surface Processes Test
1. The cross section below shows the movement of wind-driven sand particles that strike a partly exposed basalt cobble located at the surface of a windy desert. Which cross section best represents the
More informationScience and Health EFFECT OF EROSION ON THE CONDITION OF SOIL AND LAND SHAPE
4 Module 51 Science and Health EFFECT OF EROSION ON THE CONDITION OF SOIL AND LAND SHAPE A DepEd-BEAM Distance Learning Program supported by the Australian Agency for International Development To the Learner
More informationChanges over Time: Destructive Processes
1 Name Date Changes over Time: Destructive Processes Earth s surface is always changing. Blowing wind and flowing water causes some changes. Moving rock deep inside Earth causes other changes. These processes
More information4. What type of glacier forms in a sloping valley between rock walls? a. firn glacier b. ice sheet c. cirque d. alpine glacier
Multiple Choice Questions 1. The term means the loss of snow and ice by evaporation and melting. a. sublimation b. ablation c. erosion d. abrasion 2. What condition must be met for a glacier to begin flowing
More informationSurface Events & Landforms. Mrs. Green
Surface Events & Landforms Mrs. Green Bell Work 1) Which event MOST likely causes the slowest change to the surface of Earth? a) Earthquake b) Landslide c) Volcano d) Wind 2) When cold weather freezes
More informationWeathering and Erosion
Weathering and Erosion OBJECTIVE: Explain how erosion and deposition shape Earth s surface by matching and using models How do erosion and deposition shape Earth s surface? Deposition Formation Transported
More informationMass Movements, Wind, and Glaciers
Mass Movements,, and Glaciers SECTION 8.1 Mass Movement at Earth s Surface In your textbook, read about mass movement. Use each of the terms below just once to complete the passage. avalanche creep landslide
More informationGlaciers form wherever snow and ice can accumulate High latitudes High mountains at low latitudes Ice temperatures vary among glaciers Warm
The Cryosphere Glaciers form wherever snow and ice can accumulate High latitudes High mountains at low latitudes Ice temperatures vary among glaciers Warm (temperate) glaciers: at pressure melting point,
More informationWhat is weathering and how does it change Earth s surface? Answer the question using
7 th Grade Lesson What is weathering and how does it change Earth s surface? Answer the question using the sentence frame. You have 4 minutes. Weathering is. This changes the Earth s surface because. 1
More informationGuided Notes Surface Processes. Erosion & Deposition By: Glaciers
Guided Notes Surface Processes Erosion & Deposition By: Glaciers K. Coder 2015 26) How does moving ice erode and deposit sediments? Glaciers (Movement of Ice): a naturally formed mass of ice and snow that
More informationGlacial Systems and Landscapes
AQA Geography A-level Glacial Systems and Landscapes PMT Education Written by Jeevan Singh Glacial Systems and Landscapes Factors of Climate Change Glacial landscapes have a low level of resilience; they
More informationPage 1. Name:
Name: 1) Which property would best distinguish sediment deposited by a river from sediment deposited by a glacier? thickness of sediment layers age of fossils found in the sediment mineral composition
More informationThe boulder was most likely moved to this location by A) glacial ice B) prevailing wind C) streamfiow D) volcanic action
1. Which rock material was most likely transported to its present location by a glacier? A) rounded sand grains found in a river delta B) rounded grains found in a sand dune C) residual soil found on a
More informationChanging Earth s Surface
Name Date Class Changing Earth s Surface What processes wear down and build up Earth s surface? What causes the different types of mass movement? Erosion is the process by which natural forces move weathered
More informationWeathering, Erosion, Deposition, and Landscape Development
Weathering, Erosion, Deposition, and Landscape Development I. Weathering - the breakdown of rocks into smaller particles, also called sediments, by natural processes. Weathering is further divided into
More informationAnalyzing our Topic IF SO, MAKE THE CHANGES AND BE READY TO REPORT OUT!
Analyzing our Topic Look at the opening slide. Does anything there (words, pictures) make you want to change your thoughts from the smarties and chalk activities? IF SO, MAKE THE CHANGES AND BE READY TO
More informationRIVERS, GROUNDWATER, AND GLACIERS
RIVERS, GROUNDWATER, AND GLACIERS Delta A fan-shaped deposit that forms when a river flows into a quiet or large body of water, such as a lake, an ocean, or an inland sea. Alluvial Fan A sloping triangle
More informationGlacial Modification of Terrain
Glacial Modification Part I Stupendous glaciers and crystal snowflakes -- every form of animate or inanimate existence leaves its impress upon the soul of man. 1 -Orison Swett Marden Glacial Modification
More information10/27/2014. Surface Processes. Surface Processes. Surface Processes. Surface Processes. Surface Processes
Hewitt/Lyons/Suchocki/Yeh Conceptual Integrated Science Chapter 25 Surface or surficial processes originate at Earth's surface and reshape its contours. Surface processes include: Weathering Erosion Deposition
More informationWhat is a Glacier? Types of Glaciers
Alpine & Continental Glaciers Glacial Mass Balance Glacial Ice Formation Glacial Movement & Erosion Erosional and Depositional Landforms The Pleistocene Epoch Geomorphology of SW Manitoba Chapter 17 1
More informationName. 4. The diagram below shows a soil profile formed in an area of granite bedrock. Four different soil horizons, A, B, C, and D, are shown.
Name 1. In the cross section of the hill shown below, which rock units are probably most resistant to weathering? 4. The diagram below shows a soil profile formed in an area of granite bedrock. Four different
More informationGlacial Erosion Polished on front side Glacial striations (scratches) on top
St Mary s Cemetery Glacial Erosion Polished on front side Glacial striations (scratches) on top Weathering Water channel in the rock mechanical weathering Some rocks eroding faster than others mechanical
More informationTHE CHANGING SURFACE OF THE EARTH
THE CHANGING SURFACE OF THE EARTH Key words Drain geological agent weathering erosion Sediment deposition transport The landscape is a consequence of the action of two types of geological processes; internal
More informationHow to Use This Presentation
How to Use This Presentation To View the presentation as a slideshow with effects select View on the menu bar and click on Slide Show. To advance through the presentation, click the right-arrow key or
More informationTHE SCIENCE OF MAPS. ATL Skill: Critical thinking - Use models and simulations to explore complex systems and issues
THE SCIENCE OF MAPS 8.9C interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering ATL Skill: Critical thinking
More informationSTAAR Science Tutorial 40 TEK 8.9C: Topographic Maps & Erosional Landforms
Name: Teacher: Pd. Date: STAAR Science Tutorial 40 TEK 8.9C: Topographic Maps & Erosional Landforms TEK 8.9C: Interpret topographic maps and satellite views to identify land and erosional features and
More informationThe Agents of Erosion
The Agents of Erosion 1. Erosion & Deposition 2. Water 3. Wind 4. Ice California Science Project 1 1. Erosion and Deposition Erosion is the physical removal and transport of material by mobile agents such
More informationHow does Rock become Exposed to the Surface?
Weathering How does Rock become Exposed to the Surface? Most rocks, like granite, form under earth s surface. The rocks uplift and eventually make their way to earth s surface. Conditions on the surface
More informationErosion and Deposition
Erosion and Deposition Chapter Test A Multiple Choice Write the letter of the correct answer on the line at the left. 1. Water erosion begins when runoff from rainfall flows in a thin layer over the land
More informationmountain rivers fixed channel boundaries (bedrock banks and bed) high transport capacity low storage input output
mountain rivers fixed channel boundaries (bedrock banks and bed) high transport capacity low storage input output strong interaction between streams & hillslopes Sediment Budgets for Mountain Rivers Little
More informationErosion and Deposition
Erosion and Deposition The Erosion-Deposition Process What do you think? Read the two statements below and decide whether you agree or disagree with them. Place an A in the Before column if you agree with
More informationClass Notes: Surface Processes
Name: Date: Period: Surface Processes The Physical Setting: Earth Science Class Notes: Surface Processes I. Weathering and Soils Weathering -! Sediments -! Weathering occurs when rocks are exposed to:
More information2/23/2009. Visualizing Earth Science. Chapter Overview. Deserts and Drylands. Glaciers and Ice Sheets
Visualizing Earth Science By Z. Merali and B. F. Skinner Chapter 6 Deserts, Glaciers and Ice Sheets Chapter Overview Deserts and Drylands Glaciers and Ice Sheets Deserts Geography Categorization of deserts
More informationFigure 1 The map shows the top view of a meandering stream as it enters a lake. At which points along the stream are erosion and deposition dominant?
1. In which type of climate does chemical weathering usually occur most rapidly? 1. hot and dry 3. cold and dry 2. hot and wet 4. cold and wet 2. Figure 1 The map shows the top view of a meandering stream
More information1. The map below shows a meandering river. A A' is the location of a cross section. The arrows show the direction of the river flow.
1. The map below shows a meandering river. A A' is the location of a cross section. The arrows show the direction of the river flow. Which cross section best represents the shape of the river bottom at
More informationNotes and Summary pages:
Topographic Mapping 8.9C Interpret topographical maps and satellite views to identify land and erosional features and predict how these shapes may be reshaped by weathering ATL Skills: Communication taking
More informationWhich process is represented by letter F? A) capillarity B) infiltration C) condensation D) vaporization
1. Water's covalent bond is due to A) water's ability to stick to stick to other materials B) a slight negative charge of O and positive charge of H C) an uneven sharing of electrons D) both B and C 2.
More informationunit 6 Review sheet 4. The photograph below shows a sandstone butte in an arid region. A. U-shaped valley B. V-shaped valley C. cliff D.
Name: ate: 1. The large waterfall at Niagara Falls, New York, was originally located at the Niagara Escarpment. Which term best describes an escarpment? 4. The photograph below shows a sandstone butte
More informationSection 1: Weathering and Soil Formation. We will study some of the processes that contribute to soil formation
Section 1: Weathering and Soil Formation We will study some of the processes that contribute to soil formation ***Minerals form rocks. The decomposition of rocks and minerals will form soil. Minerals are
More informationWATER S EFFECT EARTH S 10.4
WATER S EFFECT ON SHAPING EARTH S SURFACE 10.4 OBJECTIVES Water is always on the move through the water cycle Explain that no matter what form water is in, it has the ability to reshape the surface of
More information1. Base your answer to the following question on the map below, which shows the generalized bedrock of a part of western New York State.
1. Base your answer to the following question on the map below, which shows the generalized bedrock of a part of western New York State. 3. The table below describes the deposits that an observer saw while
More informationPage 1 of 9 Name: Base your answer to the question on the diagram below. The arrows show the direction in which sediment is being transported along the shoreline. A barrier beach has formed, creating a
More informationExplain how rock composition affects the rate of weathering. Discuss how surface area affects the rate at which rock weathers.
Objectives Explain how rock composition affects the rate of weathering. Discuss how surface area affects the rate at which rock weathers. Describe the effects of climate and topography on the rate of weathering.
More informationFoundations of Earth Science, 6e Lutgens, Tarbuck, & Tasa
Foundations of Earth Science, 6e Lutgens, Tarbuck, & Tasa Glacial and Arid Landscapes Foundations, 6e - Chapter 4 Stan Hatfield Southwestern Illinois College Glaciers Glaciers are parts of two basic cycles
More informationWeathering & Erosion
Weathering & Erosion Weathering and Erosion Weathering - processes at or near Earth s surface that cause rocks and minerals to break down Erosion - process of removing Earth materials from their original
More informationEXTERNAL LAND FORMING PROCESSES
NAME SCHOOL INDEX NUMBER DATE EXTERNAL LAND FORMING PROCESSES WEATHERING 1 1998 Q 7 (a) (i) What is the difference between weathering and mass wasting (ii) List five processes involved in chemical weathering
More informationWeathering Notes. When the mineral composition of the rock is changed
Weathering Notes Weathering Weathering is the breaking down on rocks into smaller pieces Two types of weathering o Physical (mechanical) When the mineral composition of the rock isn t changed Ex: Smashing
More informationWatch the next few slides. When the slides stop transitioning get with an elbow partner to discuss the events that caused the formation of the
Watch the next few slides. When the slides stop transitioning get with an elbow partner to discuss the events that caused the formation of the beautiful features. Be as specific as possible. Discuss
More informationChapter 12 Weathering and Erosion
Chapter 12 Weathering and Erosion Multiple Choice Select the definition that most nearly defines the given word. 1. Landform A. chemical combination of metallic elements with oxygen B. layer of weathered
More informationName: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
Name: Class: Date: geology ch 7 test 2008 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which of the following is true about ice sheets?
More informationPage Chemical weathering occurs most rapidly in climates which are (1) moist and warm (3) dry and cold (2) moist and cold (4) dry and warm
1. Chemical weathering occurs most rapidly in climates which are (1) moist and warm (3) dry and cold (2) moist and cold (4) dry and warm 2. At high elevations in New York State, which is the most common
More informationWater - most influential force in erosion
Erosion and Deposition Agents, Forces, and Results What Caused This? What is Erosion? Erosion - moving of rock material from one place to a new location For erosion to occur three processes must take place:
More informationChapter 10. Running Water aka Rivers. BFRB Pages
Chapter 10 Running Water aka Rivers BFRB Pages 101-116 Stream Erosion and Transportation Running water is all precipitation (rain, snow, etc) that falls on Earth and is pulled downhill by gravity. Running
More informationPage 1. Name:
Name: 1) Which event is the best example of erosion? dissolving of rock particles on a limestone gravestone by acid rain breaking apart of shale as a result of water freezing in a crack rolling of a pebble
More informationUNIT SEVEN: Earth s Water. Chapter 21 Water and Solutions. Chapter 22 Water Systems. Chapter 23 How Water Shapes the Land
UNIT SEVEN: Earth s Water Chapter 21 Water and Solutions Chapter 22 Water Systems Chapter 23 How Water Shapes the Land Chapter Twenty-Three: How Water Shapes the Land 23.1 Weathering and Erosion 23.2
More informationLecture Outline Lecture Outline Monday April 9-16, 2018 Questions? Announcements:
Lecture Outline Lecture Outline Monday April 9-16, 2018 Questions? Announcements: Geology 101 Night Video: The Day After Tomorrow Hollywood disaster movie about the onset of a glacial period When: Monday
More informationName Date SURFACE PROCESSES VOCABULARY
Name Date SURFACE PROCESSES VOCABULARY 1. continental glacier 2. internal plastic flow 3. alpine glacier 4. crevasse 5. basal slip a. a crack or fissure in a glacier b. the process that causes the ice
More information8UNIT. External dynamics of the Earth. What do you remember? Key language. Content objectives
8UNIT External dynamics of the Earth What do you remember? Can you name the solids in the photograph? nd the liquid? Is the liquid moving? How does it move? What is the name of this formation of water?
More informationRunning Water and the Development of Landforms
Geography IGCSE Module One: River Environments Lesson Thirteen Running Water and the Development of Landforms Aims The aim of this lesson is for you to learn about: processes including o weathering and
More informationName Roy G Biv Page 1
Name Roy G Biv Base your answers to questions 1 through 3 on the diagram below. The arrows show the direction in which sediment is being transported along the shoreline. A barrier beach has formed, creating
More informationPhysical Geography A Living Planet
Physical Geography A Living Planet The geography and structure of the earth are continually being changed by internal forces, like plate tectonics, and external forces, like the weather. Iguaçu Falls at
More informationMaximum Extent of Pleistocene Glaciation - 1/3 of land surface Most recent glacial maximum peaked 18,000 years ago and is considered to have ended
Glaciers Maximum Extent of Pleistocene Glaciation - 1/3 of land surface Most recent glacial maximum peaked 18,000 years ago and is considered to have ended 10,000 B.P. Current Extent of Glaciation - about
More information