Unit 2 Introduction
Astronomy
Name ______________________________
Period
1 2 3 4
Date__________
Chapter 22, Section 1 (pages 614-621)
1. What is astronomy? __________________________________________________________________________
2.
Who were the first people to study astronomy? _________________________________ When did they do this?
____________________________________________________________________________________________
3. What does “geocentric” mean? _____________________ What does “heliocentric” mean? ___________________
4. Which planet has retrograde motion? _________________________ Who discovered this? ___________________
5. What was the major discovery of each of the following Astronomers?
a. Kepler _____________________________________________________________________________________
b. Newton ____________________________________________________________________________________
6. What is universal gravitation? ______________________________________________________________________
_______________________________________________________________________________________________
Chapter 22, Section 2 (pages 622-629)
1. What are the 2 main motions of Earth? A. ____________________________ B. ____________________________
2. What phenomenon is created by the tilt of Earth’s axis? _________________________________________________
3. What is the 3rd motion of Earth? ____________________________________________________________________
4. How many phases of the Moon are there? _______ What causes these phases? ____________________________
5. What is a synodic month? _________________________________________________________________________
6. What is a sidereal month? _________________________________________________________________________
7. What are the 2 types of eclipses? A. ______________________________ B. ______________________________
Chapter 23, Section 1 (pages 644-648)
1. Which planets are considered “terrestrial” planets? ____________________________________________________
2. Which planets are considered “Jovian” planets? _______________________________________________________
3. What is the key factor that separates the planets into 2 groups? __________________________________________
4. Explain the Nebular Theory ________________________________________________________________________
_______________________________________________________________________________________________
5. What is a planetesimal? __________________________________________________________________________
Chapter 23, Section 2 (pages 649-653)
1. What makes Mercury different from all other planets? __________________________________________________
2. What natural activities occur on Venus that is similar to those on Earth? ___________________________________
3. What kinds of storms occur on Mars? _______________________________________________________________
4. Which of these planets is known to have water? _______________________________________________________
Chapter 23, Section 3 (pages 654-659)
1. What property makes Jupiter different from all other planets? ___________________________________________
2. What is Saturn best known for? ____________________________________________________________________
3. What makes Uranus different? _____________________________________________________________________
4. What makes Neptune different? ____________________________________________________________________
5. How is Pluto’s orbit different from the other planets? __________________________________________________
_______________________________________________________________________________________________
a. Pluto is no longer considered a planet- what do you think? Give a thorough explanation.
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Unit 2 Introduction
Astronomy
Name
Answer Key
Period
1 2 3 4
Date__________
Chapter 22, Section 1 (pages 614-621) (2 points each)
1. What is astronomy?
2.
The study of space and Earth’s neighbors in space
Who were the first people to study astronomy?
3. What does “geocentric” mean?
Greeks
When did they do this? 600 BC – 150 AD
The Earth is the center of the Solar System What does “heliocentric” mean?
The Sun is the center of the Solar System
4. Which planet has retrograde motion?
Mars Who discovered this?
Ptolemy
5. What was the major discovery of each of the following Astronomers?
a. Kepler Discovered 3 laws of planetary motion
b. Newton First to formulate and test the law of universal gravitation
6. What is universal gravitation? Each object in the Universe has gravity which attracts other objects towards it and
the amount of gravity exerted on an object is based on its mass
Chapter 22, Section 2 (pages 622-629)
1. What are the 2 main motions of Earth? A. Rotation B.Revolution
2. What phenomenon is created by the tilt of Earth’s axis?Earth’s seasons
3. What is the 3rd motion of Earth? Precession
4. How many phases of the Moon are there? 8 What causes these phases? The orbiting of the moon around Earth
5. What is a synodic month? The time it takes between two successive full moons (29.5 days)
6. What is a sidereal month? The time it takes the moon to make a full revolution around Earth (27.3 days)
7. What are the 2 types of eclipses? A. Solar
B. Lunar
Chapter 23, Section 1 (pages 644-648)
1. Which planets are considered “terrestrial” planets? Mercury, Venus, Earth, Mars
2. Which planets are considered “Jovian” planets? Saturn, Jupiter, Uranus, Neptune
3. What is the key factor that separates the planets into 2 groups? Size & Composition
4. Explain the Nebular Theory Materials that form the planets was revolving around the Sun; these objects collided
with one another, forming larger objects until the planets were formed
5. What is a planetesimal?
A small planet (early form)
Chapter 23, Section 2 (pages 649-653)
1. What makes Mercury different from all other planets? Closest to the Sun & hottest
2. What natural activities occur on Venus that is similar to those on Earth? Volcanism
3. What kinds of storms occur on Mars? Dust storms
4. Which of these planets is known to have water? Mars
Chapter 23, Section 3 (pages 654-659)
1. What property makes Jupiter different from all other planets? It is the largest (at least 2x the mass of all other
planets combined)
2. What is Saturn best known for? Its rings system
3. What makes Uranus different? Its axis has been turned sideways
4. What makes Neptune different? Its orbit causes Neptune to orbit outside of Pluto’s orbit
5. How is Pluto’s orbit different from the other planets? Pluto’s orbit is longer and narrower than the other planets’
orbits
Unit 2 Introduction
Astronomy
Name ______________________________
Period
1 2 3 4
Date__________
Chapter 22, Section 1 (pages 614-621)
1. ¿Qué esastronomy? ________________________________________________________
2. ¿Quiénes fueronlas primeras personas enestudiar astronomy? ____________________
Grade _________%
Score ________/44
Cuandohicieron esto?_______________________________________________________
3. ¿Quésignificaba“geocentric”? _____________________ ¿Quésignificaba“heliocentric”? ___________________
4. ¿Qué planetatiene un retrograde motion? ______________________ ¿Quién descubrióesto? ________________
5. ¿Cuál fue elmayor descubrimientodecada uno de losastrónomossiguientes?
a. Copernicus _________________________________________________________________________________
b. Brahe _____________________________________________________________________________________
c. Kepler _____________________________________________________________________________________
d. Galileo ____________________________________________________________________________________
e. Newton ___________________________________________________________________________________
6. ¿Qué es universal gravitation? ____________________________________________________________________
______________________________________________________________________________________________
Chapter 22, Section 2 (pages 622-629)
1. ¿Cuáles son losdosprincipalesmovimientosde la Tierra?A. ____________________ B. ___________________
2. ¿Qué fenómenoes creado porla inclinación del ejede la Tierra?_________________________________________
3. ¿Quées el movimientoterciode la Tierra?___________________________________________________________
4. ¿Cuántasfases de la Lunahay?__________ ¿Quéhace que estasfases? __________________________________
5. ¿Qué es una synodic month? _____________________________________________________________________
6. ¿Qué es unasidereal month? _____________________________________________________________________
7. ¿Cuáles son losdostiposde eclipse? A. _____________________________ B. ____________________________
Chapter 22, Section 3 (pages 630-634)
1. ¿Qué es una crater? ____________________________________________________________________________
2. ¿Quées la teoríamás aceptadasobre cómo laluna fue creada?__________________________________________
______________________________________________________________________________________________
Chapter 23, Section 1 (pages 644-648)
1. ¿Qué planetasson consideradosplanetas "terrestrial"?________________________________________________
2. ¿Qué planetasson considerados como "Jovian" planetas?______________________________________________
3. ¿Cuál esel factor clave quesepara a losplanetasen 2 grupos? __________________________________________
4. Explicar el Nebular Theory _______________________________________________________________________
______________________________________________________________________________________________
5. ¿Qué es unplanetesimal? ________________________________________________________________________
Chapter 23, Section 2 (pages 649-653)
1. ¿Lo que hacediferente a todosMercuryotros planetas? _______________________________________________
2. ¿Qué actividadesnaturales ocurrenen Venusque es similar alas de la Tierra?______________________________
3. ¿Qué tipo detormentasse producenen Mars?_______________________________________________________
4. ¿Cuál deestos planetasse sabe que tieneel agua? ____________________________________________________
Chapter 23, Section 3 (pages 654-659)
1. ¿Québien hace deJúpiterdiferente de todos losotros planetas?_________________________________________
2. ¿Qué esmejor conocido porSaturn? ________________________________________________________________
3. Lo que hacediferenteUranus?_____________________________________________________________________
4. Lo que hacediferenteNeptune?___________________________________________________________________
5. ¿Cómo esla órbita de Plutodiferente de losotros planetas?____________________________________________
______________________________________________________________________________________________
Chapter 23, Section 4 (pages 660-664)
1. ¿Dóndeestánla mayoría de losasteroidessituadoen el SistemaSolar?____________________________________
2. Identificar las partes deun cometa._________________________________________________________________
3. Enlos cuales 2lugares en elSistemaSolar sonlos cometasse encuentranen órbita?_________________________
4. Quecometaes más conocidopara nosotros?_________________________________________________________
5. ¿Cuáles sonlas diferencias entre un"meteoroid", un "meteor", y un "meteorite"?___________________________
______________________________________________________________________________________________
Vocabulario -Definircada una de laspalabrassiguientes.

Astronomy

Precession

Terrestrial Planet

Coma

Geocentric

Perihelion

Jovian Planet

Meteoroid

Heliocentric

Aphelion

Nebula

Meteor

Retrograde Motion

Perigee

Planetesimal

Meteorite

Rotation

Apogee

Asteroid

Revolution

Crater

Comet