Astronomy. Today: Eclipses and the Motion of the Moon. First homework on WebAssign is due Thursday at 11:00pm
|
|
|
- Thomas Peters
- 6 years ago
- Views:
Transcription
1 Astronomy A. Dayle Hancock Small 239 Today: Eclipses and the Motion of the Moon > > > Office hours: MTWR 10-11am First homework on WebAssign is due Thursday at 11:00pm > > > Phases of the Moon Why we only see one side of the Moon Solar and Lunar eclipses Why lunar eclipses are not all total Solar eclipses are only visible in some locations How ancient Greek astronomers deduce the size of the Earth, Moon and Sun physics.wm.edu/~hancock/171/ Page 1
2 Orbital Motion of the Moon The Moon travels (orbits) the earth in 29.5 days. The Moon is bright not because of light that emitted from its surface but because of sunlight that is reflected from its surface. The orbital position of the Moon determines how much of the Moon we see ( not the shadow of the Earth) Half of the Moon is illuminated by the Sun at all times but we can sometimes not see any of the Sun illuminated area (a 'new Moon') and sometimes we can see all of the Sun illuminated area ('full Moon').
3 Phases of the Moon First Quarter: Earth-Moon-Sun at 90 Moon appears half illuminated from earth 3
4 Phases of the Moon Waxing Gibbous Sun-Earth-Moon Angle > 90 Illuminated region is increasing (waxing) More than half of moon is illuminated (gibbous) 5
5 Phases of the Moon Full: Moon-EarthSun on a straight line earth is between Sun and Moon Moon appears fully illuminated 6
6 Phases of the Moon Waning Gibbous: Moon-Earth-Sun angle is > 90 Illuminated region is decreasing (waning) More than half of moon is illuminated (gibbous) 7
7 Phases of the Moon Third Quarter: Earth-Moon-Sun at 90 Moon appears half illuminated from earth Other half of moon is illuminated compared to 1st quarter 8
8 Phases of the Moon Waning Crescent: Moon-Earth-Sun angle is < 90 Illuminated region is decreasing (waning) Less than half of moon is illuminated (crescent) 9
9 Phases of the Moon New: Moon-Earth-Sun on a straight line Moon between Sun and Earth Moon appears dark 10
10 Phases of the Moon Waxing Crescent: Moon-Earth-Sun angle is < 90 Illuminated region is increasing (waxing) Less than half of moon is illuminated (crescent) 11
11 Phases of the Moon First Quarter: Earth-Moon-Sun at 90 Moon appears half illuminated from earth 12
12
13 The Moon always Show the Same Face The Moon always has the same hemisphere (face) towards the earth. The Moon does rotate. It rotates exactly once for each orbit in a synchronous rotation. Note that there is no dark side of the Moon since every area of the Moon is in sunlight during some point of the orbit. This synchronous rotation is caused by 'tidally locking' due to the Earth's gravity
14 Sidereal and Synodic Month The sidereal month is how long it takes the Moon to compete on complete orbit around the earth with respect to the background stars. Since the Earth moves in its orbit, the synodic month is the time between new moons. The synodic month is longer than a sidereal month.
15 Eclipses An eclipse occurs when the Sun, Earth, and Moon are directly in line with each other A solar eclipse occurs when the Moon passes between the Sun and Earth, with the Moon casting its shadow on the Earth causing a midday sky to become dark as night for a few minutes. This occurs when there is a new16moon.
16 Eclipses A lunar eclipse occurs when the Moon passes through the shadow of the Earth. There must be a full moon for this to occur so the Earth is between the Sun and Moon.
17 Eclipses Question: Since the Moon orbits in 29.5 days, why is there not a solar eclipse once a month followed by a lunar eclipse two weeks later?
18 Eclipses Question: Since the Moon orbits in 29.5 days, why is there not a solar eclipse once a month followed by a lunar eclipse two weeks later? Answer: The plane of the Moon's orbit is tilted by 5o
19 Eclipses The plane of the Moon's orbit is inclined by 5o with respect to the ecliptic plane (plane of the Earth's orbit). Where the planes intersect is call the line of nodes. Eclipses can only occur with the line of nodes points at the sun.
20 Full or partial Eclipse? Penumbral and Umbra caused by a non-point source of light. Penumbral eclipse (partial) Umbra (the full shadow) > Moon & Earth both have umbra & penumbra 21
21 Full or partial Eclipse? Dark region in the middle is the umbra. The partial dark area is the penumbra
22 Full or partial Eclipse? If the Moon is at its perigee (point nearest the Earth) then the eclipse has a larger width. If the Moon is at its apogee (furthest from the earth) then only part of the Sun is blocked out in an annular eclipse.
23 Solar Eclipses
24 Classical (Greek) Astronomy Through use of models and observations, they were the first to use a careful and systematic manner to explain the workings of the heavens Limited to naked-eye observations, their idea of using logic and mathematics as tools for investigating nature is still with us today Their methodology is in many ways as important as the discoveries themselves
25 Shape of the Earth Ancient Greeks knew the Earth was round Pythagoras taught of a spherical earth (500 BC) Aristotle (500 BC) > Shape of earth s shadow in eclipse > New Stars become visible as you travel south > Distant ships disappear bottom first
26 Size of the Earth Eratosthenes (200 BC) devised a clever way of measuring it using shadows and a bit of geometry > His method assumes the sun is far away
27 Size of the Earth Since 7o is about 1/50 of a circle (7o/360o) and Eratosthenes know it was about 5000 stades from Syene to Alexandria then 50 x 5000 gives the Earth's circumference as 250,000 stades. If the length of a stade is 1/6 km (modern guess) the the earth is about 42,000 km (actual is 40,000 km)
28 Aristarchus (250 BC) on the Earth and Moon He estimated the relative size of the Earth and the moon > Used Earth s shadow on the moon in a lunar eclipse (Earth is about 3 times larger)
29 Aristarchus on Solar System Distances By measuring the angle between the Sun and Moon to be 87o during a quarter moon and using geometry, Aristarchus conclude the sun is about 20 times the distance to the Moon since sin(90o 87o) =.05
Introduction To Modern Astronomy II
ASTR 111 003 Fall 2006 Lecture 03 Sep. 18, 2006 Introduction To Modern Astronomy II Introducing Astronomy (chap. 1-6) Planets and Moons (chap. 7-17) Ch1: Astronomy and the Universe Ch2: Knowing the Heavens
3. Lunar Motions & Eclipses. Lunar Phases: Static & Dynamic. Static & Dynamic Lunar Phases. Earth & Moon: Both Show Phases!
3. Lunar Motions & Eclipses Lunar motions & lunar phases Lunar axial rotation & orbital revolution Eclipses & the line of nodes Lunar eclipses Solar eclipses Relative Earth-Moon-Sun distances Lunar Motions
Dive into Saturn.
Dive into Saturn http://www.pbs.org/wgbh/nova/space/death-dive-to-saturn.html Read Ch. 3 By next class time Do practice online quiz 01 Axis tilt changes directness of sunlight during the year. Why Does
The Earth-Moon-Sun System. I. Lunar Rotation and Revolution II. Phases of the Moon III. Lunar Eclipses IV. Solar Eclipses
The Earth-Moon-Sun System I. Lunar Rotation and Revolution II. Phases of the Moon III. Lunar Eclipses IV. Solar Eclipses I. Lunar Rotation and Revolution The Moon rotates on its axis as it circles the
Chapter 3 Cycles of the Moon
Chapter 3 Cycles of the Moon Guidepost In the previous chapter, you studied the cycle of day and night and the cycle of the seasons. Now you are ready to study the brightest object in the night sky. The
Today. Tropics & Arctics Precession Phases of the Moon Eclipses. Ancient Astronomy. Lunar, Solar FIRST HOMEWORK DUE NEXT TIME
Today Tropics & Arctics Precession Phases of the Moon Eclipses Lunar, Solar Ancient Astronomy FIRST HOMEWORK DUE NEXT TIME Tropic: Latitude where the sun [just] reaches the zenith at noon on the summer
Today FIRST HOMEWORK DUE NEXT TIME. Phases of the Moon. Eclipses. Lunar, Solar. Ancient Astronomy
Today FIRST HOMEWORK DUE NEXT TIME Phases of the Moon Eclipses Lunar, Solar Ancient Astronomy Tropic: Latitude where the sun [just] reaches the zenith at noon on the summer solstice Arctic/Antarctic Circle:
Directions: Read each slide then fill in the blanks.
Directions: Read each slide then fill in the blanks. Elements S6E2a. Develop and use a model to demonstrate the phases of the moon by showing the relative positions of the sun, Earth, and moon Essential
STANDARD. S6E1 d: Explain the motion of objects in the day/night sky in terms of relative position.
STANDARD S6E1 d: Explain the motion of objects in the day/night sky in terms of relative position. S6E2 c. Relate the tilt of the Earth to the distribution of sunlight throughout the year and to its effect
Observing the Universe for Yourself
Observing the Universe for Yourself Figure 6-20 Solar-System Formation What does the universe look like from Earth? With the naked eye, we can see more than 2,000 stars as well as the Milky Way. A constellation
Today. Solstices & Equinoxes Precession Phases of the Moon Eclipses. Ancient Astronomy. Lunar, Solar FIRST HOMEWORK DUE NEXT TIME
Today Solstices & Equinoxes Precession Phases of the Moon Eclipses Lunar, Solar Ancient Astronomy FIRST HOMEWORK DUE NEXT TIME Tropic: Latitude where the sun [just] reaches the zenith at noon on the summer
Chapter 2 Discovering the Universe for Yourself
Chapter 2 Discovering the Universe for Yourself 2.1 Patterns in the Night Sky Our goals for learning: What does the universe look like from Earth? Why do stars rise and set? Why do the constellations we
The Earth & its good friend, the Moon. SNC1D7 - Space
The Earth & its good friend, the Moon SNC1D7 - Space Key Questions! What causes... day and night? the seasons? the tides? What are eclipses? Let s eat some space oreos! How do we know the Earth is round?
Chapter 2 Discovering the Universe for Yourself. Copyright 2012 Pearson Education, Inc.
Chapter 2 Discovering the Universe for Yourself 1 2.1 Patterns in the Night Sky Our goals for learning: What does the universe look like from Earth? Why do stars rise and set? Why do the constellations
The Cause of the Seasons
The Cause of the Seasons Summer Winter Seasons are caused by the Earth s axis tilt, not the distance from the Earth to the Sun! Axis tilt changes directness of sunlight during the year. Why Does Flux Sunlight
Outline. Astronomy 122. The Cycle of Phases. As the Moon orbits the Earth, we see it go through a cycle of phases. The Moon s Phases Eclipses
Astronomy 122 Outline This Class (Lecture 5): Gravity and the Planets Next Class: The Nature of Light Homework #2 due Fri! The Moon s Phases Eclipses Music: Spaceboy The Smashing Pumpkins The Cycle of
Dr. Tariq Al-Abdullah
1 Chapter 1 Charting the Heavens The Foundations of Astronomy 2 Learning Goals: 1. Our Place in Space 2. The Obvious view 3. Earth s Orbital Motion 4. The Motion of the Moon 5. The Measurement of Distance
Chapter 2 Discovering the Universe for Yourself
Chapter 2 Discovering the Universe for Yourself 2.1 Patterns in the Night Sky Our goals for learning: What does the universe look like from Earth? Why do stars rise and set? Why do the constellations we
Eclipses September 12th, 2013
Eclipses September 12th, 2013 Who was the favorite Star Wars character of the class? A) Obi-Wan B) Jar Jar C) Luke Skywalker D) Yoda News! Dark matter http://mcdonaldobservatory.org/news/releases/2013/09/10
Chapter 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
Chapter 2 Discovering the Universe for Yourself. What does the universe look like from Earth? Constellations. 2.1 Patterns in the Night Sky
Chapter 2 Discovering the Universe for Yourself 2.1 Patterns in the Night Sky Our goals for learning: What does the universe look like from Earth? Why do stars rise and set? Why do the constellations we
The Earth and the Moon. The Moon is our nearest neighbour. It crosses the sky at ~12º per day, or its own diameter (~30 arc minutes) in ~ 1 hour
The Earth and the Moon The Moon is our nearest neighbour. It crosses the sky at ~12º per day, or its own diameter (~30 arc minutes) in ~ 1 hour Lunar Phases ~29.5 days between new moons Reflected light
The celestial sphere, the coordinates system, seasons, phases of the moon and eclipses. Chapters 2 and S1
The celestial sphere, the coordinates system, seasons, phases of the moon and eclipses Chapters 2 and S1 The celestial sphere and the coordinates system Chapter S1 How to find our way in the sky? Let s
The Moon -Around the Earth and in the Sky
The Moon -Around the Earth and in the Sky Our goals for learning: Why do we see phases of the Moon? When do we see the phases of the Moon? What causes eclipses? Why do we see phases of the Moon? Lunar
lightyears observable universe astronomical unit po- laris perihelion Milky Way
1 Chapter 1 Astronomical distances are so large we typically measure distances in lightyears: the distance light can travel in one year, or 9.46 10 12 km or 9, 600, 000, 000, 000 km. Looking into the sky
Astronomy 122 Section 1 TR Digital Computer Laboratory. Outline. Celestial Sphere. Motions in the Sky
Astronomy 122 Section 1 TR 1300-1350 1320 Digital Computer Laboratory Leslie Looney Phone: 244-3615 Email: lwlw@wuiucw. wedu Office: Astro Building #218 Office Hours: T 10:30-11:30 a.m. or by appointment
3) During retrograde motion a planet appears to be A) dimmer than usual. B) the same brightness as usual C) brighter than usual.
Descriptive Astronomy (ASTR 108) Exam 1 B February 17, 2010 Name: In each of the following multiple choice questions, select the best possible answer. In the line on the scan sheet corresponding to the
1) Kepler's third law allows us to find the average distance to a planet from observing its period of rotation on its axis.
Descriptive Astronomy (ASTR 108) Exam 1 A February 17, 2010 Name: In each of the following multiple choice questions, select the best possible answer. In the line on the scan sheet corresponding to the
REVIEW CH #0. 1) Right ascension in the sky is very similar to latitude on the Earth. 1)
REVIEW CH #0 TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Right ascension in the sky is very similar to latitude on the Earth. 1) 2) Latitude and right ascension
The Celestial Sphere. Chapter 1. Constellations. Models and Science. Constellations. Diurnal vs. Annular Motion 9/16/2010
The Celestial Sphere Chapter 1 Cycles of the Sky Vast distances to stars prevent us from sensing their true 3-D arrangement Naked eye observations treat all stars at the same distance, on a giant celestial
2.2 The Reason for Seasons
2.2 The Reason for Seasons Our goals for learning: What causes the seasons? How does the orientation of Earth's axis change with time? Thought Question TRUE OR FALSE? Earth is closer to the Sun in summer
Astronomy. Unit 2. The Moon
Astronomy Unit 2 The Moon 1 Traveling on Spaceship Earth Although we imagine ourselves to be at rest, the Earth takes part in the motions outlined below. The Earth spins about its N-S axis, with a period
Chapter 2 Lecture. The Cosmic Perspective Seventh Edition. Discovering the Universe for Yourself
Chapter 2 Lecture The Cosmic Perspective Seventh Edition Discovering the Universe for Yourself Discovering the Universe for Yourself 2.1 Patterns in the Night Sky Our goals for learning: What does the
1-2. What is the name given to the path of the Sun as seen from Earth? a.) Equinox b.) Celestial equator c.) Solstice d.) Ecliptic
Chapter 1 1-1. How long does it take the Earth to orbit the Sun? a.) one sidereal day b.) one month c.) one year d.) one hour 1-2. What is the name given to the path of the Sun as seen from Earth? a.)
Announcements. Astronomical perspective. The Greek Model of the Solar System Geocentric model (because the Earth is at the center)
Astronomy 101: 9/25/2008 Announcements Exam study materials will be posted on the course web page tomorrow. Homework 2 is now available on the OWL Due 10/01/08 before midnight 1st midterm: 10/2/08 Midterms
At Home Phases Demo. Astronomy 210. Section 1 MWF Astronomy Building. Geocentric vs. Heliocentric system. The Motion of the Planets
Astronomy 210 Section 1 MWF 1500-1550 134 Astronomy Building This Class (Lecture 4): Early Cosmology HW #1 Due on Friday! Next Class: You missed the first planetarium show. Cosmic Revolution Music: Twilight
Explain how Earth's movement and the moon's orbit cause the phases of the moon. Explain the difference between a solar eclipse and a lunar eclipse.
Explain how Earth's movement and the moon's orbit cause the phases of the moon. Explain the difference between a solar eclipse and a lunar eclipse. The Earth- Moon System Have you ever wondered why the
Chapter 2 Lecture. The Cosmic Perspective Seventh Edition. Discovering the Universe for Yourself Pearson Education, Inc.
Chapter 2 Lecture The Cosmic Perspective Seventh Edition Discovering the Universe for Yourself Discovering the Universe for Yourself 2.1 Patterns in the Night Sky Our goals for learning: What does the
Chapter 3: Cycles of the Sky
Chapter 3: Cycles of the Sky Motions of the Planets Mercury Venus Earth All planets in almost circular (elliptical) orbits around the sun, in approx. the same plane, the ecliptic plane. The Moon is orbiting
Astronomy is the oldest science! Eclipses. In ancient times the sky was not well understood! Bad Omens? Comets
Astronomy is the oldest science! In ancient times the sky was not well understood! Eclipses Bad Omens? Comets 1 The Ancient Greeks The Scientific Method Our ideas must always be consistent with our observations!
The Sun-Earth-Moon System
Name The Sun-Earth-Moon System Section 28.3 The Sun-Earth-Moon System Date Main Idea Details Read the title of Section 3. List three things that might be discussed in this section. 1. 2. 3. Review Vocabulary
Physical 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
Physical 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
Chapter 2. The Rise of Astronomy. Copyright (c) The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter 2 The Rise of Astronomy Copyright (c) The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Periods of Western Astronomy Western astronomy divides into 4 periods Prehistoric
2.1 Patterns in the Night Sky
2.1 Patterns in the Night Sky Our goals for learning: What are constellations? How do we locate objects in the sky? Why do stars rise and set? Why don t we see the same constellations throughout the year?
The reason is that the Moon s rotation takes 27.3 days the same amount of time it takes to revolve once around Earth. Because these two motions take
Moon Phases 6.E.1.1 Explain how the relative motion and relative position of the sun, Earth and moon affect the seasons, tides, phases of the moon, and eclipses. Motions of the Moon Just as Earth rotates
A User s Guide to the Sky
A User s Guide to the Sky Constellations Betelgeuse Rigel Stars are named by a Greek letter ( ) according to their relative brightness within a given constellation plus the possessive form of the name
Academic Year Second Term. Science Revision Sheet. Grade
Academic Year 2017-2018 Second Term Science Revision Sheet Grade 6 Name: Grade Date: Section: Part A. Science Practice. Circle the letter of your answer. 1. When the moon is waxing, its lighted part appears
Lunar Motion. V. Lunar Motion. A. The Lunar Calendar. B. Motion of Moon. C. Eclipses. A. The Lunar Calendar. 1) Phases of the Moon. 2) The Lunar Month
Lunar Motion Dr. Bill Pezzaglia V. Lunar Motion A. The Lunar Calendar B. Motion of Moon 2 Updated Sep 8, 2009 C. Eclipses A. The Lunar Calendar 3 1. Earth s satellite: The Moon and its Phases 4 1) Phases
2. Modern: A constellation is a region in the sky. Every object in the sky, whether we can see it or not, is part of a constellation.
6/14 10. Star Cluster size about 10 14 to 10 17 m importance: where stars are born composed of stars. 11. Galaxy size about 10 21 m importance: provide a stable environment for stars. Composed of stars.
Topics for Today s Class. The Phases of the Moon. Why we see Phases of Moon. PHYS 1403 Stars and Galaxies
PHYS 1403 Stars and Galaxies Topics for Today s Class Chapter 3: Lunar Phases Chapter 3: Lunar Eclipse Chapter 3: Solar Eclipse The Phases of the Moon Why we see Phases of Moon From Earth, we see different
Brock University. Test 1, October 2016 Number of pages: 9 Course: ASTR 1P01 Number of Students: 500 Date of Examination: October 3, 2016
Brock University Test 1, October 2016 Number of pages: 9 Course: ASTR 1P01 Number of Students: 500 Date of Examination: October 3, 2016 Number of hours: 50 min Time of Examination: 17:00 17:50 Instructor:
Brock University. Test 1, October 2017 Number of pages: 9 Course: ASTR 1P01, Section 1 Number of Students: 470 Date of Examination: October 3, 2017
Brock University Test 1, October 2017 Number of pages: 9 Course: ASTR 1P01, Section 1 Number of Students: 470 Date of Examination: October 3, 2017 Number of hours: 50 min Time of Examination: 17:00 17:50
Benefit of astronomy to ancient cultures
Benefit of astronomy to ancient cultures Usefulness as a tool to predict the weather (seasons) Usefulness as a tool to tell time (sundials) Central Africa (6500 B.C.) Alignments Many ancient cultures built
12.2. 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
Astronomy 131: The Solar System and Space Exploration Dr. Randy L. Phelps. Supplementary Problem The Sizes and Distances of the Moon and Sun
Astronomy 131: The Solar System and Space Exploration Dr. Randy L. Phelps Supplementary Problem The Sizes and Distances of the Moon and Sun The intellectual advances of the ancient Greeks revolutionized
Brock University. Test 1, September 2014 Number of pages: 9 Course: ASTR 1P01 Number of Students: 500 Date of Examination: September 29, 2014
Brock University Test 1, September 2014 Number of pages: 9 Course: ASTR 1P01 Number of Students: 500 Date of Examination: September 29, 2014 Number of hours: 50 min Time of Examination: 18:00 18:50 Instructor:
Eclipse! Hey! You re blocking my light!
Eclipse! Hey! You re blocking my light! Eclipse Terminology Solar vs. lunar Total, partial, annular Umbra, penumbra, eclipse (shadow) track Corona, diamond ring effect Ascending node, descending node first
Chapter 22.2 The Earth- Moon-Sun System. Chapter 22.3: Earth s Moon
Chapter 22.2 The Earth- Moon-Sun System Chapter 22.3: Earth s Moon Chapter 22.2 The Earth- Moon-Sun System Motions of the Earth The two main motions of the Earth are rotation and revolution Rotation
Astronomy 103: First Exam
Name: Astronomy 103: First Exam Stephen Lepp September 21, 2010 Each question is worth 2 points. Write your name on this exam and on the scantron. Short Answer Mercury What is the closest Planet to the
PHASES, 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
Physics Lab #5:! Starry Night Student Exercises II!
Physics 10293 Lab #5: Starry Night Student Exercises II Introduction We will continue today exploring some of the useful applications of the Starry Night software to learn about motions in the sky. Step
Introductory Astronomy
1 Introductory Astronomy NAME: Homework 3: The Moon: Orbit, Phases, Eclipses, and More: Homeworks and solutions are posted on the course web site. Homeworks are NOT handed in and NOT marked. But many homework
because 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
Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION
Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION CHAPTER 0 Charting the Heavens Lecture Presentation 0.0 Astronmy a why is that subject! Q. What rare astronomical event happened in late summer
What do you think causes the different phases of the moon? What do you think happens during a solar and lunar eclipse?
Bellwork What do you think causes the different phases of the moon? What do you think happens during a solar and lunar eclipse? Answer the questions using the sentence frames (5 minutes): I think what
TAKEN 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
1. 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
Lecture 3 Angular Sizes, Moon Phases, and Ptolemy September 13, 2017
1 Lecture 3 Angular Sizes, Moon Phases, and Ptolemy September 13, 2017 2 Measuring Angles Apparent distances in the sky are determined by measuring the angle between two objects. There are 360 degrees
ASTR-1010: Astronomy I Course Notes Section III
ASTR-1010: Astronomy I Course Notes Section III Dr. Donald G. Luttermoser Department of Physics and Astronomy East Tennessee State University Edition 2.0 Abstract These class notes are designed for use
Intro to Astronomy. Looking at Our Space Neighborhood
Intro to Astronomy Looking at Our Space Neighborhood Astronomy: The Original Science Ancient cultures used the movement of stars, planets and the moon to mark time Astronomy: the study of the universe
Solar 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
Lunar Motion. V. Lunar Motion. A. The Lunar Calendar. B. Motion of Moon. C. Eclipses. A. The Lunar Calendar. 1) Phases of the Moon. 2) The Lunar Month
Lunar Motion Dr. Bill Pezzaglia V. Lunar Motion A. The Lunar Calendar B. Motion of Moon 2 Updated 2014Jan17 C. Eclipses A. The Lunar Calendar 3 1. Phases of Moon 4 1) Phases of the Moon 2) The Lunar Month
Phases of the Moon. Edward M. Murphy Space Science for Teachers. 6/24/2005 Phases of the Moon 1
Phases of the Moon Edward M. Murphy Space Science for Teachers 6/24/2005 Phases of the Moon 1 Earth Moon System The average distance from the Moon to the Earth is 384,404 km. Closest approach is 356,334
Solar Noon The point at which the Sun is highest in the sky (and when shadows are shortest).
Solar Noon The point at which the Sun is highest in the sky (and when shadows are shortest). Rotation The movement of one object as it turns or spins around a central point or axis. Revolution The movement
Astro 210 Lecture 3 Jan 22, 2018
Astro 210 Lecture 3 Jan 22, 2018 Announcements HW1 available; due online in pdf at 5:00pm Friday Office hours: Instructor 2-3pm Wed; TA 3:30-4:30pm Thurs register your iclicker; link on course moodle site
Name: 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
Name: Exam 1, 9/30/05
Multiple Choice: Select the choice that best answers each question. Write your choice in the blank next to each number. (2 points each) 1. At the North Pole in mid-november, the sun rises at a. North of
18.2 Earth Cycles Days and years Calendars Years and days Leap years Calendars throughout human history 20,000 years ago. 7,000 BC. 4,000 BC.
18.2 Reading 18.2 Earth Cycles Do you ever wonder where our calendar comes from? Or why the Moon gradually changes its shape? Or why we have seasons? The answers have to do with the relative positions
Term 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
Lunar Motion. V. Lunar Motion. A. The Lunar Calendar. B. Motion of Moon. C. Eclipses. A. The Lunar Calendar. 1) Phases of the Moon. 2) The Lunar Month
Lunar Motion Dr. Bill Pezzaglia V. Lunar Motion A. The Lunar Calendar B. Motion of Moon 2 Updated 2012Oct03 C. Eclipses A. The Lunar Calendar 3 1. Phases of Moon 4 1) Phases of the Moon 2) The Lunar Month
The position of the Sun on the celestial sphere at the solstices and the equinoxes.
1 2 3 4 5 6 7 8 9 10 11 12 13 EARTH IN SPACE Tillery, Chapter 18 Artist's concept of the solar system. Shown are the orbits of the planets, Earth being the third planet from the Sun, and the other planets
THE SUN-EARTH-MOON SYSTEM
Date Period Name THE SUN-EARTH-MOON SYSTEM SECTION 27.1 Tools of Astronomy In your textbook, read about electromagnetic radiation and telescopes. Use each of the terms below just once to complete the passage.
The Ecliptic on the Celestial. Sphere. The Celestial Sphere. Astronomy 210. Section 1 MWF Astronomy Building. celestial equator are not
Astronomy 210 Section 1 MWF 1500-1550 134 Astronomy Building This Class (Lecture 3): Lunar Phases Check Planetarium Schedule Next Class: HW1 Due Friday! Early Cosmology Music: We only Come out at Night
TIDES. 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
Astr 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
Full 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
The Origin of Modern Astronomy. Nicolai Copernicus ( )
The Origin of Modern Astronomy Nicolai Copernicus (1473-1543) Goals for Today Complete our study of the Moon: lunar phases, the Sun-Earth-Moon geometry, and the eclipses Tides and their origin Earth's
7.4 Universal Gravitation
Circular Motion Velocity is a vector quantity, which means that it involves both speed (magnitude) and direction. Therefore an object traveling at a constant speed can still accelerate if the direction
8 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
Reserve your right to think, for even to think wrongly is better than not to think at all. To teach superstitions as truth is a most m terrible
Reserve your right to think, for even to think wrongly is better than not to think at all. To teach superstitions as truth is a most m terrible thing. - Hypatia Bit of Administration. Reading Bless, Chapters
Physical Science Astronomy: Eclipses
a place of mind F A C U L T Y O F E D U C A T I O N Department of Curriculum and Pedagogy Physical Science Astronomy: Eclipses Science and Mathematics Education Research Group Supported by UBC Teaching
Orbital 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
Most of the time during full and new phases, the Moon lies above or below the Sun in the sky.
6/16 Eclipses: We don t have eclipses every month because the plane of the Moon s orbit about the Earth is different from the plane the ecliptic, the Earth s orbital plane about the Sun. The planes of
Chapter: The Earth-Moon-Sun System
Chapter 7 Table of Contents Chapter: The Earth-Moon-Sun System Section 1: Earth in Space Section 2: Time and Seasons Section 3: Earth s Moon 1 Earth in Space Earth s Size and Shape Ancient Measurements
1/3/12. Chapter: The Earth-Moon-Sun System. Ancient Measurements. Earth s Size and Shape. Ancient Measurements. Ancient Measurements
// Table of Contents Chapter: The Earth-Moon-Sun System Section : Chapter 7 Section : Section : Earth s Size and Shape Ancient Measurements First, no matter where you are on Earth, objects fall straight
Phases of the Moon. Two perspectives: On Earth, or outside the Moon s orbit. More Phases. What if we zoom out? Phases of the Moon Demo 2/3/17
Phases of the Moon The Moon goes through a set of phases about once every month Month comes from the word moon Time period of the phases (from Full Moon to Full Moon) is 29.5 days. The different phases
a. 0.5 AU b. 5 AU c. 50 AU d.* AU e AU
1 AST104 Sp04: WELCOME TO EXAM 1 Multiple Choice Questions: Mark the best answer choice. Read all answer choices before making selection. (No credit given when multiple answers are marked.) 1. A galaxy
Astr 2310 Tues. Feb. 2, 2016
Astr 2310 Tues. Feb. 2, 2016 Today s Topics Celestial Sphere Continued Effects due to Earth s Orbital Motion Apparent path of Sun across the sky Seasons Apparent Motions of Planets Complications Ancient
[04] Seasons, Phases, and Eclipses (9/7/17)
![[04] Seasons, Phases, and Eclipses (9/7/17)](/thumbs/79/80259995.jpg "[04] Seasons, Phases, and Eclipses (9/7/17)")
1 [04] Seasons, Phases, and Eclipses (9/7/17) Upcoming Items Homework #2 due next lecture. Read Ch. 3.3 and do the self-study quizzes for next lecture, and skim 2.4, 3.1, 3.2, & 3.4. https://pbs.twimg.com/media/dh69il_u0aenivq.jpg:large