Tide Formation A combination of forces acts on the oceans to produce tides. These forces include
|
|
- Loren Fletcher
- 5 years ago
- Views:
Transcription
1 UNIT 2. WAVES AND BEACHES Tide Formation A combination of forces acts on the oceans to produce tides. These forces include the gravitational pull of the moon, the gravitational pull of the sun, the centrifugal force of the earth as it rotates, the relativepositions ofthe moon and the sun, and the angle ofthe orbit of the moon around the earth. Let's consider how each of these forces acts separately and then see how they work together to cause the daily variations in the tide. Gravitational Pull of the Moon Gravity is the force of attraction between two bodies. It is directly proportional ir masses and inversely proportional to the distance between them. Gravity draws the moon and the earth towardeach other. If there were no resistance to this force, the moon and the earth wouldcollide. However, as the moon and the earth revolve around a central point, a balancing centrifugal force is created thatkeeps them apart. You can see an exampleofcentrifugalforce when a large person and a child hold hands and spin around together. The centrifugal force tends to pull them apart. Water on the earth in the region directly beneath the moon is pulled by gravitational force toward the moon. On the opposite side of the earth, centrifugal force pulls water away from the earth, opposing the gravitational force ofthe moon. Water in the ocean bulges as shown in Fig (The bulge is greatly exaggeratedfor illustration. The actual bulge is only a few meters high in most cases.) earth omoon moon's gravitational force earth's centrifugal force Fig Tides are caused by gravitational and centrifugal forces acting on the ocean. 116
2 A person night day north pole full moon high tide"" 12 midnight '... sun B c D moon t.) moon 4[) low tide 6:13 am '... sun high tide 12:25 pm sun E moon t) moon moves () sun high tide 12:50 am -:... sun Fig Tides at various times of the day (north polar view) 117
3 UNIT 2. WAVES AND BEACHES Imagine yourself in a spaceship looking down at the north pole. See Fig Suppose you could see a person standing on the.. shore of the ocean near the equator. At 12 midnight the person would see a high tide, caused by gravitational force of the moon. See (A) in Fig As the earth rotates during the day, the person would gradually move into a region of low tide at about 6:12 a.m. See (B) in Fig At 12:25 p.m. therewouldbe anotherhigh tide, caused by centrifugal force. See (C) in Fig At about 6:37 p.m. there would be another low tide as in (D) in Fig Note also that the moon moves slightly (about 12 ) in its orbit around the earth during the 24-hr period. Thereforethe earthmustrotate slightly longer (about 50 min more) before the moon would be again directly overhead of the person. This explains why the moon "rises" about 50 min later each night. The times of the tides are also 50 min later the next day. Although a solar day is 24 hr, a lunar day is 24 hr and 50 min. QUESTIONS 9. What actually causes the tidal changes during a single day-the movement of the water, the movement of the moon, or the movement ofthe earth? Explain. 10. How much later would the high tide appearat the end ofthe secondday? The end of the third day? 11. In Fig. 7-5, a high tide occurs at 12:25 p.m., not at 12 noon. Why? Why does a low tide occur at 6:13 a.m.? At what time would the evening low tide occur? 12. Select several days from Table 7-1. Calculate the time interval between a high tide and the next low tide eachday. Are the time intervals exactly 6 hr and 12 min? Explain. Gravitational Pull of the Sun The sun exerts a second gravitational force on the earth, producing its own tide. Opposing the sun's tidal force is the centrifugal force ofthe earth, which produces a bulge ofwater on the side opposite the sun. As the earth rotates, the tide level changes due sun's gravitation from high to low and back again,justlike the moon. Butthese changes occur during a solar day, or 24 hr. Although the sun's massis much greaterthan the moon's, the sun is much farther from the earth, so its tidal force is abouthalfthatofthe moon. Interactions of the Moon and Sun As we have seen, the moon moves a little farther each day (about 12") in its orbital journeyaround the earth. Therefore the tides caused by the moon's gravity occur 50 min laterthan the tidescausedby the sun's gravity. It takes the moon about 29.5 days to complete its orbit around the earth. This period is called a lunar month. The moon and the sun cause predictable, periodic changes in tidal range during a lunar month (29.5 days). Therefore a lunar month is also called a tidal month. When the earth, moon, and sun are in a straight line, they exert maximum gravitational pull on the surface of the ocean. See Fig This is when the moon is a new moon orafull moon. Extra-high andextralow tides occur at this time. They are called springtidesbecausethey springorjumpup. When the sun and moon are at a right angle (90 ) to each other, the moon is in its first quarter or its third quarter. In this 118
4 Topic 7. Tides position the two tend to neutralize each other's tidal pull, and we get a reduced tide called a neap tide. See Fig There are two spring tides and two neap tides in a tidal month. In Figs. 7-6and 7-7 the ideal tide curves caused by the sun and the moon are shown as if they occur independently of each other. However, as you may remember from your study of waves, when two waves meet, they combine to form a single wave bigger than either of the two alone. This is also true of tide waves. ACTIVITY 2 Graph the combined effect of tidal changes caused by the sun and the moon during a spring tide and during a neap tide. PROCEDURE 1. Construct a tide graph showing the combined effectofthe sun and the moon when they are in line with the earth. a. Determine the tide height at 12 midnight caused by the moon and by the sun. Use (B) in Fig b. Add the two tide heights together. c. Plot the combined tide height in (C) in Fig d. Repeat steps (a) to (c) for each hour during a full day (24 hours). e. Connect the data points to produce the tidal curve for this day. 2. Construct a tide graph showing the combined effects of the sun and the moon when they are at right angles earth. Repeat the steps in Procedure 1 but use the information given in the graphs in (B) in Fig The drawing in (A) in Fig. 7-6shows the tide at full moon. Make a similardrawing ofthe tide at new moon. What would such a tide look like? 4. Thedrawingin (A) in Fig. 7-7 shows the tide at the first quarter of the moon. Make a drawing of the tide when the moon is in its third quarter. Whatwould such a tide look like? QUESTIONS 13. Which of your graphs shows spnng tides? Which shows neap tides? 14. Approximatelyhow many days does the moon take to move from its position shown in (A) in Fig. 7-6 to its position shown in (A) in Fig. 7-7? Explain your reasomng. 15. Assume that the tide graph you drew in Procedure 1 occurred on March 1. On what date would the tides plottedin Procedure 2 occur? In Procedure 3? In Procedure 4? 16. Look at the combined tide curves in Fig. 7-6 and Fig At what time are the low tides? 17. Note that in Fig. 7-6 the high tides caused by the sun and the moon both occur 'it 12 midnight, but that in Fig. 7-7.ne high tide caused by the moon occurs at 6 a.m, Explain why this is so. 18. Using the tide graphs you produced, how could you predict what the tides would be on any given day of the month? Try it by making a I-month tide graph. 119
5 tide caused by the sun (solar tide) o"":li-n U moon's _ gravitational pull tide caused by the moon (lunar tide) sun's gravitational pull.. A. Tides caused by the sun and the moon at full moon -s: Cl '0; s: Ol "0 '';::: 12 midnight 6 a.m. 12 noon 6 p.m. B. Changes in the tide caused by the sun and the moon 12 midnight -..c: Cl 'iii s: Ol :2-12 midnight 6 a.m. 12 noon 6 p.m. 12 midnight C. Changes in the tide caused by the combined gravities of the sun and the moon Fig Changes in tide levels when the sun and moon are in line with the earth 120
6 moon moving in its orbit around the earth x \ \ I gravitational pull.. : '''''' of the sun \, I tide caused by the sun (solar tide) "\. ""''''00'' j pull '"tida caussd by tho moon (lunar tide) A. "'e, caused by the,::<..:h:.:() and the moon at first quarter -.c:.2'.c: :2- solar tide,,-/ midnight 6 a.m. 12 noon 6 p.m. B. Changes in the tide caused by the sun and the moon 12 midnight... til c: ::> III... -e.e.2' s: :2-12 midnight 6 a.m. 12 noon 6 p.m. 12 midnight C. Changes in the tide caused by the combined gravities of the sun and the moon Fig Changes in tide levels when the sun and moon are at right angles earth > 121
Tides The Largest Waves in the Ocean
Tides Tides The Largest Waves in the Ocean Understanding Tides Understanding Tides You will study several topics: Why Earth has tides Why tides vary daily Why tides vary monthly Tide Generation Tide Generation
More informationbecause you asked for it just one more set of MOON REVIEW questions
because you asked for it just one more set of MOON REVIEW questions 1. The diagram below shows the Moon as it revolves around Earth. The numbered locations represent different positions of the Moon in
More informationTIDES. n What are tides? The periodic rise and fall of the sea level under the gravitational pull of the moon. n Tides are one of the most
Tides TIDES What are tides? The periodic rise and fall of the sea level under the gravitational pull of the moon Tides are one of the most reliable phenomena in the world. As the sun rises in the east
More informationOcean Tides. Lexile 960L
6E3 tmosphere, Water ycle, Waves, and urrents Ocean Tides Lexile 960L 1 The gritty sand oozes between your toes as you stroll along the beach. The gentle lapping of the waves lulls you into a peaceful
More informationSun Moon Earth connections. Phases Eclipses Tides
Moon FACTS The Moon is a natural Satellite that revolves around the Earth The Moon is made of rock The Moon is 382,400 kilometers 250,000miles from Earth The moon is about ¼ the size of Earth The moon
More informationTIDES. A tide just after the first or third quarters of the moon There is the least difference between high and low water Spring Tides
TIDES Earth and Moon Interaction The Earth is pulled to the Sun by gravity. The moon is pulled to the Earth by gravity. The moon s gravity effects the Earth s tides. Neap Tides A tide just after the first
More information4 Tides. What causes tides? How do tides vary?
CHAPTER 14 4 Tides SECTION The Movement of Ocean Water BEFORE YOU READ After you read this section, you should be able to answer these questions: What causes tides? How do tides vary? National Science
More informationExplained by Dr CJC Rees (York)
HOW THE TIDES WORK Explained by Dr CJC Rees (York) TIDES AND WATER MARKS TIDES and the - SYSTEM The earth-moon system rotates in space about its common centre of mass, there being a stabilising balance
More informationCreate a bulleted list of everything you know about the moon!
The Moon Create a bulleted list of everything you know about the moon! If given the opportunity, would you want to go to the moon? A. YES! That would be really cool. B. NO! Why would anyone want to go
More informationEarth s Motion. Lesson Outline LESSON 1. A. Earth and the Sun 1. The diameter is more than 100 times greater than
Lesson Outline Earth s Motion LESSON 1 A. Earth and the Sun 1. The diameter is more than 100 times greater than Earth s diameter. a. In the Sun, atoms combine during, producing huge amounts of energy.
More informationExemplar for Internal Achievement Standard Science Level 1. Demonstrate understanding of the effects of astronomical cycles on planet Earth.
Exemplar for Internal Achievement Standard Science Level 1 This exemplar supports assessment against: Achievement Standard 90954 Demonstrate understanding of the effects of astronomical cycles on planet
More informationHomeroom: OBJECTIVES: By the end of today s lesson, you will be able to. SWBAT explain how the gravity of the moon causes tides in Earth s oceans.
7 th Grade Science Unit: Earth, Sun, and Moon Lesson: ESM 9_ Tides 1 Name: Date: Thursday, October 27, 2016 Homeroom: OBJECTIVES: By the end of today s lesson, you will be able to SWBAT explain how the
More information1. Determine the length of time between the two high tides shown for May 13.
Name Roy G Biv Base your answers to questions 1 through 3 on the diagrams and tables below and on your knowledge of Earth science. Each diagram represents the Moon's orbital position and each table lists
More informationTAKEN FROM HORIZONS 7TH EDITION CHAPTER 3 TUTORIAL QUIZ
TAKEN FROM HORIZONS 7TH EDITION CHAPTER 3 TUTORIAL QUIZ 1. When Neap tides are occurring, a. a person experiences the lowest tides close to sunset and sunrise. b. the Sun and the Moon are separated by
More informationThe Night Sky 1st Grade PSI Science Classwork. Draw and write about what you think the night sky looks like. 1st Grade PSI The Moon
The Night Sky Classwork Draw and write about what you think the night sky looks like. The Moon Classwork For #1-5, fill in the blank with the correct word. Word Bank Natural near craters hot astronaut
More information1. Determine the length of time between the two high tides shown for May 13.
Name Roy G Biv Base your answers to questions 1 through 3 on the diagrams and tables below and on your knowledge of Earth science. Each diagram represents the Moon's orbital position and each table lists
More informationSPI Use data to draw conclusions about the major components of the universe.
SPI 0607.6.1 - Use data to draw conclusions about the major components of the universe. o Stars are huge, hot, brilliant balls of gas trillions of kilometers away. A Galaxy is a collection of billions
More informationTime, Seasons, and Tides
Time, Seasons, and Tides Celestial Sphere Imagine the sky as a great, hollow, sphere surrounding the Earth. The stars are attached to this sphere--- some bigger and brighter than others--- which rotates
More informationWhat if we didn t have The Moon?
The Moon Minds-on Inquiry Moon Stats What if we had no Moon? Orbit of the Moon Rotation of the Moon The Dark Side of the Moon The Phases of the Moon The Tides The Moon Illusion What if we didn t have The
More informationOverview: In this activity, students will learn how the moon affects ocean tides and also will create and interpret graphs of regional tide data.
Tides & Lunar Cycles Overview: In this activity, students will learn how the moon affects ocean tides and also will create and interpret graphs of regional tide data. Episode Connection: Tides At the conclusion
More informationEcology Chapter Teacher Sheet. Activity #1: Graphing San Diego Tides
Ecology Chapter Teacher Sheet Activity #1: Graphing San Diego Tides California Content Standard Investigation and Experimentation 1i Objectives: To create a graph of monthly tides in San Diego, and label
More informationTides Unit II: The Bulge Theory of the Tides (3.5 pts)
T. James Noyes, ECC Tides Unit II: The Bulge Theory of the Tides (Topic 7A-2) page 1 Name: Section: Tides Unit II: The Bulge Theory of the Tides (3.5 pts) The Bulge Theory of the Tides is the Simplest,
More informationThe SMILE Program August Teachers Workshop, 2004 Tracking Tides Tracking the Tides
Tracking the Tides Tides are the periodic rise and fall of the ocean waters. They are caused by the gravitational pulls of the moon and (to a lesser extent) sun, as well as the rotation of the Earth. The
More informationEarth Moon Motions A B1
Earth Moon Motions A B1 1. The Coriolis effect provides evidence that Earth (1) rotates on its axis (2) revolves around the Sun (3) undergoes cyclic tidal changes (4) has a slightly eccentric orbit 9.
More information1. The diagram below represents Earth and the Moon as viewed from above the North Pole. Points A, B, C, and D are locations on Earth's surface.
1. The diagram below represents Earth and the Moon as viewed from above the North Pole. Points A, B, C, and D are locations on Earth's surface. 2. The graph below shows the change in tide heights of the
More information7 th Grade Science. Name: Date: Friday, November 4, Unit: Earth, Sun, and Moon. Homeroom: Lesson: ESM 14_ Tides Review
7 th Grade Science Unit: Earth, Sun, and Moon Lesson: ESM 14_ Tides Review Name: Date: Friday, November 4, 2016 Homeroom: OBJECTIVES: By the end of today s lesson, you will be able to SWBAT demonstrate
More informationGuided Notes Astronomy. Earth s Moon Formation Orbit Craters Motions Phases Tides Eclipses
Guided Notes Astronomy Earth s Moon Formation Orbit Craters Motions Phases Tides Eclipses K. Coder 2015 1. What is the Moon? The Moon: the Earth's only natural satellite. See ESRT page 15 for data on Earth
More informationTerm Info Picture. A celestial body that orbits a bigger celestial body (a moon) Earth s only natural satellite. It causes all of the tides.
Astronomy (Earth, Moon and Sun) S6E2. Obtain, evaluate, and communicate information about the effets of the relative positions of the sun, Earth and moon. A. Develop and use a model to demonstrate the
More informationA) M D) The Moon s distance from Earth varies in a cyclic manner.
Base your answers to questions 1 and 2 on the diagram below, which shows Earth in orbit around the Sun, and the Moon in orbit around Earth. M 1, M 2, M 3, and M 4 indicate positions of the Moon in its
More informationPhysical Science. Chapter 22 The Earth in Space. Earth s Rotation
Physical Science Chapter 22 The Earth in Space Earth s Rotation Axis imaginary line passing through the North and South Pole Earth s axis is tilted at 23 ½ degrees Rotation: the Earth spinning on its axis
More informationPhysical Science. Chapter 22 The Earth in Space
Physical Science Chapter 22 The Earth in Space Earth s Rotation Axis imaginary line passing through the North and South Pole Earth s axis is tilted at 23 ½ degrees Rotation: the Earth spinning on its axis
More informationName Period 4 th Six Weeks Notes 2013 Weather
Name Period 4 th Six Weeks Notes 2013 Weather Radiation Convection Currents Winds Jet Streams Energy from the Sun reaches Earth as electromagnetic waves This energy fuels all life on Earth including the
More informationFull Moon. Phases of the Moon
Phases of the Moon The Moon takes 29.5 days to orbit Earth. This is a lunar month. The gravity of the Earth keeps the Moon in orbit. The Moon does not produce light. We see the Moon because it reflects
More informationA. the spinning of Earth on its axis B. the path of the Sun around Earth
stronomy 1 Packet Write answers on your own paper 1. The Sun appears to move across the sky each day. What causes this?. the spinning of Earth on its axis. the path of the Sun around Earth. the production
More informationThe Main Point. Phases and Motions of the Moon. Lecture #5: Earth, Moon, & Sky II. Lunar Phases and Motions. Tides. Eclipses.
Lecture #5: Earth, Moon, & Sky II Lunar Phases and Motions. Tides. Eclipses. The Main Point The Moon s size and orbit lead to many interesting phenomena: changing phases, tides, and eclipses. Astro 102/104
More informationSolar System Glossary. The point in an object s elliptical orbit farthest from the body it is orbiting
Solar System Glossary Apogee Atmosphere Asteroid Axis Autumn Barred spiral The point in an object s elliptical orbit farthest from the body it is orbiting The air that surrounds Earth and other planets
More informationPHASES, ECLIPSES, AND TIDES
PHASES, ECLIPSES, AND TIDES MOTIONS OF THE MOON The changing relative positions of the moon, Earth, and sun cause the phases of the moon, eclipses, and tides. The moon rotates once on its axis in the same
More informationThe Tides: Consider Moon s Gravity
The Tides: Consider Moon s Gravity Pulls all points on Earth toward Moon s center of mass. near side of Earth is attracted more than far side because force of gravity decreases with increasing distance.
More informationChapter 10: Tides. Tides: 1. Understanding the Earth-Moon system
Chapter 10: Tides Remember that tides are waves that are caused by the gravitational attraction of moon and sun. Tidal waves are the longest of all waves, L can be up to half the Earth s circumference.
More informationScience Unit Test Grade: 8 Unit 6: Gravity
Science Unit Test Grade: 8 Unit 6: Gravity Name Date 1. Which of these is best used to measure weight in newtons? a. Spring scale b. Triple beam balance c. Double pan balance d. Simple lever 2. Which of
More informationSC.8.E.5.9. Summer and Winter Gizmo
8 th Grade Science Quarter 1 Recovery Packet SC.8.E.5.9 DAYS/YEARS/SEASONS Go to www.explorelearning.com and search for the Summer and Winter Gizmo. Answer the following questions: Gizmo Warm-up Summer
More informationWhich of the following are correct?
The Tides: Consider Moon s Gravity Pulls all points on earth toward Moon s center of mass. near side of Earth is attracted more than far side because force of gravity decreases with increasing distance.
More informationTides: this is what we see
Last time Wind generated waves and Tsunami These are wind and earthquake generated waves Today: Tides These are Gravity waves How are they generated What are their intersting complexities? Low tide (decrease
More informationFigure 1 Different gravity force of the moon on different places on earth
TIDES How the Sun and Moon cause tides. Spring tides, neap tides, and the three patterns of tides on earth caused by the rotation of Earth and local topographical features: Diurnal, Semi-Diurnal and Mixed
More information12.2. The Earth Moon System KNOW? The Phases of the Moon. Did You
12.2 The Earth Moon System Did You KNOW? The Moon is Earth s closest neighbour. It is highly influential in our lives because it causes the oceans tides. The Moon is also responsible for eclipses. waxing
More informationTides ( gravity waves ): this is what we see. (bay of Fundy, CAN)
Tides ( gravity waves ): this is what we see (bay of Fundy, CAN) Which of the following are correct? A. Coastlines experience two high tides each day. B. Tides are 12 hours apart. C. High tide occurs simultaneously
More informationEarth in Space Chapter 1
Earth in Space Chapter 1 Section 1 Earth in Space How does Earth move in space? What causes the cycle of seasons on Earth? How the Earth Moves The study of the moon, stars, and other objects in space is
More informationPhysics. Chapter 9 Gravity
Physics Chapter 9 Gravity The Newtonian Synthesis Gravity is a Universal Force The Newtonian Synthesis According to legend, Newton discovered gravity while sitting under an apple tree. The Falling Moon
More informationChapter 3 The Cycles of the Moon
Chapter 3 The Cycles of the Moon Goals: To understand the phases of the moon To understand how the moon affects tides To understand lunar and solar eclipses To learn some of the history associated with
More informationMid Term Prep-The Moon
1. A high tide occurred at 6:00 a.m. at a beach on Long Island. The next high tide at this same beach would occur at approximately A) 12:15 p.m. on the same day B) 6:30 p.m. on the same day C) 12:45 p.m.
More informationThe Cosmic Perspective Seventh Edition. Making Sense of the Universe: Understanding Motion, Energy, and Gravity. Chapter 4 Lecture
Chapter 4 Lecture The Cosmic Perspective Seventh Edition Making Sense of the Universe: Understanding Motion, Energy, and Gravity 2014 Pearson Education, Inc. Making Sense of the Universe: Understanding
More informationName: Earth and Space Assessment Study Guide. Assessment Date : Term Rotation Revolution
Name: Earth and Space Assessment Study Guide Assessment Date : Earth s Rotation and Revolution Term Rotation Revolution Brief Definition Earth s Time to Complete One complete spin on an axis 24 hours (or
More information1. The bar graph below shows one planetary characteristic, identified as X, plotted for the planets of our solar system.
1. The bar graph below shows one planetary characteristic, identified as X, plotted for the planets of our solar system. Which characteristic of the planets in our solar system is represented by X? A)
More informationEarth-Moon System Fun with Gravity Sarazin. Sizes of Earth and Moon
Earth-Moon System Fun with Gravity Sarazin Sizes of Earth and Moon Earth-Moon System Fun with Gravity Sarazin Sizes of Earth and Moon Precession: Gravity not parallel to rotation axis rotation axis gravity
More informationEarth in Space. The Sun-Earth-Moon System
in Space The --Moon System 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 the statement or a D if
More informationEarth Science: Earth's Place in the Universe Unit 2: The Moon
Slide 1 / 127 Slide 2 / 127 New Jersey Center for Teaching and Learning Progressive Science Initiative This material is made freely available at www.njctl.org and is intended for the non-commercial use
More informationChapter Introduction Lesson 1 Earth s Motion Lesson 2 Earth s Moon Lesson 3 Eclipses and Tides Chapter Wrap-Up. Jason Reed/Photodisc/Getty Images
Chapter Introduction Lesson 1 Earth s Motion Lesson 2 Earth s Moon Lesson 3 Eclipses and Tides Chapter Wrap-Up Jason Reed/Photodisc/Getty Images What natural phenomena do the motions of Earth and the Moon
More informationThe Ocean s Tides. Standards. Ocean Literacy. 46 Rocky Shore Lesson 5. Focus Question. Overview. Objectives. Materials Needed. Teacher Preparation
The Ocean s Tides Topic Tides, Change Duration One session Vocabulary gravitational force neap tides orbit rotation spring tides tides Standards Practices Planning and Carrying Out Investigations Core
More informationMS 20 Tides Exercise
MS 20 Tides Exercise Name Time class meets Introduction Tides are the cyclical rise and fall of sea level caused by the gravitational attraction of the moon and, to a lesser extent, by the sun. Gravitational
More informationChapter 10 Tides. Introductory Oceanography 10 th Edition
Chapter 10 Tides Introductory Oceanography 10 th Edition Most ocean waves are wind-generated The medium itself (solid, liquid, gas) does NOT actually travel in the direction of energy Figure 8-2 What causes
More informationPatterns of Change on Earth
TEKS collect and analyze data to identify sequences and predict patterns of change in shadows, tides, seasons, and the observable appearance of the Moon over time Patterns of Change on Earth Patterns and
More informationWhat causes the tides in the ocean?
What causes the tides in the ocean? By NASA and NOAA, adapted by Newsela staff on 02.09.17 Word Count 686 Level 830L Flying gulls on Morro Strand State Beach, California, at low tide. Morro Rock is seen
More informationTides Supplement. Brian Arbic
Tides Supplement Brian Arbic OVERVIEW QUESTIONS What causes the tides? How is a lunar day different from a solar day? Which body creates a larger tidal influence on Earth: the Moon or the Sun? How do the
More informationPage Tides ANIMATION. Tidal forces
Page 194 7.5 Tides ANIMATION Tidal forces Anyone who has spent even a few hours by the sea knows that the ocean's level rises and falls during the day. A blanket set on the sand 10 feet from the water's
More informationChapter 2 Case Studies and Study Guide: Energy Sources of Earth Processes and Disasters
Chapter 2 Case Studies and Study Guide: Energy Sources of Earth Processes and Disasters Key Concepts The four principal types of energy relevant to natural disasters are kinetic, potential, rotational
More informationPasswords. ScienceVocabulary
Passwords ScienceVocabulary F To the Student Mitosis. Apogee. Ion. Sometimes it seems that scientists speak a language all their own. Passwords: Science Vocabulary will help you learn the words you need
More informationD. most intense and of longest duration C. D.
Astronomy Take Home Test Answer on a separate sheet of paper In complete sentences justify your answer Name: 1. The Moon s cycle of phases can be observed from Earth because the Moon 4. The accompanying
More information1. The pictures below show the Sun at midday. Write winter, spring or summer under the correct picture.
Test 2 1. The pictures below show the Sun at midday. Write winter, spring or summer under the correct picture. 2. Look carefully at the phases of the Moon. Number them (1 to 4) in the order that you would
More informationThe Earth, Moon, and Sky. Lecture 5 1/31/2017
The Earth, Moon, and Sky Lecture 5 1/31/2017 From Last Time: Stable Orbits The type of orbit depends on the initial speed of the object Stable orbits are either circular or elliptical. Too slow and gravity
More informationAstr 1050 Mon. Jan. 31, 2017
Astr 1050 Mon. Jan. 31, 2017 Finish Ch. 2: Eclipses & Planetary Motion Seasons Angular Size formula Eclipses Planetary Motion Reading: For Today: Finish Chapter 2 For Monday: Start Chapter 3 Homework on
More informationThe Giant Tides of Fundy What are tides?
The Giant Tides of Fundy What are tides? The tide is the natural change in elevation of water over time and can easily be observed along any ocean coastline. Some areas of the world have one high tide
More informationTides. Gm 1 m2. F gravity=
1 Tides Newton's gravitational force law says that the force of gravitation attraction depends strongly on the separation between two objects. The same applies to different portions of an extended object
More informationPractice Seasons Moon Quiz
1. Which diagram represents the tilt of Earth's axis relative to the Sun's rays on December 15? A) B) C) D) 2. The diagram below represents Earth in space on the first day of a season. 5. Base your answer
More informationComplete the body of your
Complete the body of your notes All blanks filled in All vocabulary words highlighted All pictures drawn with at least 3 labels each. Revise in pen. Review your notes and write the questions. Write the
More informationMid Term Prep-Moon Review 2
Base your answers to questions 1 through 3 on the diagram below, which shows positions of the Moon in its orbit and phases of the Moon as viewed from New York State. 1. Which statement best explains why
More informationPatterns on Earth 4.8C
Have you ever made shadow puppets? If you put your hand between a flashlight and a wall, you will make a shadow. You might have made a rabbit shape or some other animal shape with your hands. Your hand
More informationAstronomy Review. Use the following four pictures to answer questions 1-4.
Astronomy Review Use the following four pictures to answer questions 1-4. 1. Put an X through the pictures that are NOT possible. 2. Circle the picture that could be a lunar eclipse. 3. Triangle the picture
More informationTIDAL POWER!
Tide Notes terms: spring tide, neap tide, flood tide,ebb tide, slack tide, mean low water, mean high water, sea level, diurnal tides, semidiurnal tides http://www.iit.edu/~johnsonp/smart00/lesson4.htm#highest
More informationAstronomy Regents Review
Name Astronomy Regents Review Base your answers to questions 1 and 2 on the diagram below, which shows s orbit around the un as viewed from space. is shown at eight different positions labeled A through
More informationSAMPLE First Midterm Exam
Astronomy 1000 Dr C. Barnbaum SAMPLE First Midterm Exam Note: This is a sample exam. It is NOT the exam you will take. I give out sample exams so that you will have an understanding of the depth of knowledge
More informationIsaac Newton and the Laws of Motion and Gravitation 2
Isaac Newton and the Laws of Motion and Gravitation 2 ASTR 101 3/21/2018 Center of Mass motion Oblate shape of planets due to rotation Tidal forces and tidal locking Discovery of Neptune 1 Center of Mass
More informationTEACHER Worksheet: Phases of the Moon and Tides
TEACHER Worksheet: Phases of the Moon and Tides Subject: Physics & Astronomy Grades levels: 6-8 Description: Data pattern recognition exercise where students compare the two daily datasets (for one month)
More informationINVESTIGATING TIDAL RANGES
Name Period ÿ Date INVESTIGATING TIDAL RANGES TIDES are the daily rising and falling of Earth's ocean levels caused by the GRAVITATIONAL forces of the Moon and the Sun acting on the oceans. The gravity
More informationDefine umbra and penumbra. Then label the umbra and the penumbra on the diagram below. Umbra: Penumbra: Light source
Lesson 3 Eclipses and Tides LA.8.2.2.3, SC.8.E.5.9, SC.8.N.1.1 Skim or scan the heading, boldfaced words, and pictures in the lesson. Identify or predict three facts you will learn from the lesson. Discuss
More informationLecture: October 1, 2010
Lecture: October 1, 2010 How long would it take to walk to Alpha Centauri? Announcements: Next Observatory Opportunity: Wednesday October 6 Phases of Matter the phases solid liquid gas plasma depend on
More informationStars, Galaxies & Universe Announcements. Stars, Galaxies & Universe Lecture #3. Reading Quiz questions. Phases of the Moon & Eclipses
Stars, Galaxies & Universe Announcements - Science library (120 Iowa Ave (across from Joe s Place) has copies of the textbook on reserve -Labs start this week print out lab document before class (see link
More informationSPACE REVIEW FOR SOL (6 th GRADE TOPIC)
SPACE REVIEW FOR SOL (6 th GRADE TOPIC) Helpful sources: Quizlet study sets, video links in this review packet, your 6 th grade notebook Solar System and Planets Solar System 101: http://video.nationalgeographic.com/video/101-videos/solar-system-sci
More informationName Period Chapter 12 &13 Study Guide
Name Period Chapter 12 &13 Study Guide Multiple Choice Identify the choice that best completes the statement or answers the question. 1. When are tides highest? a. during the moon s first quarter phase
More informationOrbital Mechanics. CTLA Earth & Environmental Science
Orbital Mechanics CTLA Earth & Environmental Science The Earth Spherical body that is flattened near the poles due to centrifugal force (rotation of the Earth) 40,074 KM across at the Equator 40,0007 KM
More information18.1 Earth and Its Moon Earth s shape and orbit Earth s shape Earth s orbit around the Sun
18.1 Earth and Its Moon Revolving around Earth at a distance of 384,400 kilometers is our only moon. Since the invention of spacecraft, our knowledge of Earth and the Moon has grown tremendously. In fact,
More informationIntroduction to Astronomy
Introduction to Astronomy AST0111-3 (Astronomía) Semester 2014B Prof. Thomas H. Puzia Theme Our Sky 1. Celestial Sphere 2. Diurnal Movement 3. Annual Movement 4. Lunar Movement 5. The Seasons 6. Eclipses
More informationMoon, Planet, Star, Solar System, Galaxy, Universe
Dr. V s Study Guide : Astronomy Unit 1) Place the following in order of increasing size: The Galaxy, the Solar System, a Star, the Universe,a Moon and a Planet. Moon, Planet, Star, Solar System, Galaxy,
More informationMIDTERM PRACTICE EXAM ANSWERS
MIDTERM PRACTICE EXAM ANSWERS 1. (2) Location B shows that the altitude of the noon Sun increases between Dec 21. and June 21. Location B also shows that the Dec. 21 noon Sun is at an altitude of approximately
More informationMoon Occurrences. Eclipses. Tides
Moon Occurrences Eclipses Tides Notes page: What is an eclipse? An eclipse is an event during which one object casts a shadow onto another. Two types of Eclipses Two types of Eclipses: Lunar Eclipse Solar
More informationWhich phase of the Moon will be seen from the Earth at position 5? A) B) C) D)
Name Date 1. Which motion causes the Moon to show phases when viewed from the Earth? A) the rotation of the Moon on its axis B) the revolution of the Moon around the Earth C) the rotation of the Sun on
More informationRotation and Revolution
On Earth, each day begins at sunrise and ends at sunset. You see the Sun come up or rise in the morning and go down or set at night. When we use these phrases, what do you think they imply about the way
More informationThe children have already done several experiments with gravity from Functional
1. Purpose of Experiments with Gravity The children have already done several experiments with gravity from Functional Geography and learned about its importance in the formation of the universe. This
More informationChapter 20 Directed Reading, continued. 29. During an El Nino event, surface water temperatures along South America's western coast
28. What is upwelling? 29. During an El Nino event, surface water temperatures along South America's western coast Mark each of the following statements True or False. 30. El Nitio affects both surface
More informationThis clementine orange is an oblate spheroid. Earth is more rounded than this clementine, but it is still an oblate spheroid.
On Earth, each day begins at sunrise and ends at sunset. You see the Sun come up or rise in the morning and go down or set at night. When we use these phrases, what do you think they imply about the way
More information8 th Grade Earth, Moon and Sun Systems Review
8 th Grade Earth, Moon and Sun Systems Review #1 Click on the link to learn What causes Seasons? A #2 H G B D C What is season A in this diagram? E F A: Summer B: Fall C: Winter D: Spring D. Spring A #3
More information