Unit 2 Test

Question 1

What is the theory that the earth is the center of the solar system

Answer 1

Geocentric model

Question 2

What is the Latin meaning of satellite

Answer 2

Body Guard

Question 3

The word satellite, which means body guard in Latin, was first coined by

Answer 3

Johannes Kepler.

Question 4

The theory that the sun is the center of the solar system is called what

Answer 4

Heliocentric System

Question 5

How many laws did Isaac Newton Devise

Answer 5

4

Question 6

Who was born the same year Galileo died?

Answer 6

Newton

Question 7

In the beginning of classical astronomy, the distance of the sun, earth, and stars were determined by?

Answer 7

Stellar parallax

Question 8

What planet did Galileo view through his telescope and notice it went through phases like the moon?

Answer 8

Venus

Question 9

What does the term “helio” mean?

Answer 9

Sun

Question 10

Who did Tycho Brahe leave all his work

Answer 10

Kepler

Question 11

How many laws did Kepler use to describe planetary motion?

Answer 11

3

Question 12

What did Kepler base all his laws on?

Answer 12

Behavior of the planets based on their past through space

Question 13

How many years did Galileo spend under house arrest?

Answer 13

8 years

Question 14

What falling fruit helped Newton begin his first thoughts on gravity?

Answer 14

Apples

Question 15

According to Kepler, planets do not orbit the sun in a perfect circle. What is this orbit called

Answer 15

Keplerian orbit

Question 16

Who is “always” credited for the invention of the first telescope?

Answer 16

Galileo

Question 17

Who had introduced the concept of a sun centered solar system 2000 years before Ptolemy?

Answer 17

Nicolai Copernicus

Question 18

Who is know for his laws on planetary motion?

Answer 18

Kepler

Question 19

Where did Claudius Ptolemy study astronomy

Answer 19

Alexandria in Egypt

Question 20

How is your force measured on a planet?

Answer 20

The Gravitational force

Question 21

what is it called when a planet is furthest from the sun?

Answer 21

Elliptical

Question 22

Which of Newton’s laws state: A body at rest stays at rest and a body of motion stays in motion?

Answer 22

Newton’s First law of motion

Question 23

Why aren’t asteroids not spherical like the planets

Answer 23

They don’t have their gravity

Question 24

Which astronomer was given an island to dedicated to studying astronomy?

Answer 24

Tycho

Question 25

Which of Galileo’s 5 discoveries helped back the heliocentric system

Answer 25

He noticed that the mon, Jupiter’s moons, Venus, and the sun has dark spots

Question 26

Does the moon exert the same amount of gravitational force on the earth as the earth exerts on the moon?

Answer 26

No they have different masses

Question 27

What was added to Galileo’s telescope to enhance the quality?

Answer 27

2 convex lenses

Question 28

What does the word GEO mean?

Answer 28

Earth

Question 29

What is the unit of measurement from the earth to the sun?

Answer 29

Astronomical Units or AU

Question 30

What is Orbit Eccentricity

Answer 30

A measure of how much an elliptical orbit is “squashed”

Question 31

What planet in our solar system has the highest eccentricity

Answer 31

Mercury

Question 32

What planet in our solar system has the lowest eccentricity?

Answer 32

Venus

Question 33

What are the two forces keeping planets in orbit

Answer 33

Gravity and Inertia

Question 34

Which one of Newton’s laws states the concept of action and reaction?

Answer 34

Newton’s third law of motion