Unit 1

Question 1

_____ experimental results are valuable to know.

Answer 1

All (Negative and Positive)

Question 2

_____ draws an object toward a center.

Answer 2

Centripetal force

Question 3

_____ first used the telescope for astronomy, discovering mountains on the Moon.

Answer 3

Galileo Galilei

Question 4

The time it takes a planet to orbit its sun varies with the planet’s _____ from it.

Answer 4

Distance

Question 5

Gravitation is inversely proportional to the _____ of the distance between any two objects.

Answer 5

Square

Question 6

_____ was one Greek thinker who held the heliocentric view.

Answer 6

Heraclides

Question 7

The formula for calculating amount of force is _____.

Answer 7

Force = Mass x Acceleration

Question 8

Change in an object’s motion is proportional to the _____ impressed or applied.

Answer 8

Force

Question 9

_____ keeps the Moon in orbit about our planet.

Answer 9

Centripetal Acceleration

Question 10

_____ made observations that provided the clue to mathematically defining planetary movements, all without a telescope.

Answer 10

Tycho Brahe

Question 11

Inertia _____.

Answer 11

is the resistance to change in motion

Question 12

_____ had a calendar that consisted of 365 days and three seasons.

Answer 12

Egyptians

Question 13

A(n) _____ is a large, solid body that orbits a star.

Answer 13

Planet

Question 14

The _____ is the view port of a telescope.

Answer 14

Eyepiece

Question 15

Velocity _____.

Answer 15

is the distance and direction traveled by a moving object in a certain period of time

Question 16

_____ was the first known person to invent the telescope.

Answer 16

Hans Lippershey

Question 17

Angular momentum measures _____.

Answer 17

The momentum of an object circling about some other object.

Question 18

Sunspots were first described as _____.

Answer 18

Blemishes.

Question 19

A(n) _____ is an act designed to discover a truth.

Answer 19

Experiment

Question 20

A _____ is a gaseous body that shines by its own light.

Answer 20

Star

Question 21

Acceleration is _____.

Answer 21

The rate at which a change in velocity occurs

Question 22

_____ is the force that causes rotation.

Answer 22

Torque

Question 23

_____ held the geocentric view, which was accepted as true for over 1,500 years.

Answer 23

Ptolemy

Question 24

_____ divided the sky into degrees, minutes, and seconds to plot sky positions, measures we still use.

Answer 24

Sumerians

Question 25

_____ is proportional to the mass of any object.

Answer 25

Gravitation

Question 26

All forces occur in pairs that are _____ to each other.

Answer 26

Equal and opposite

Question 27

_____ described the law of universal gravitation and even named the phenomenon.

Answer 27

Isaac Newton

Question 28

_____ is the attractive force of two objects for each other.

Answer 28

Gravitation

Question 29

_____ built the first reflecting telescope.

Answer 29

Isaac Newton

Question 30

_____ draws objects away from a center.

Answer 30

Centrifugal force

Question 31

_____ explores all phenomena of light energy.

Answer 31

Optics

Question 32

the science that investigates the characteristics of all objects in space

Answer 32

Astronomy

Question 33

the theory that the Earth is the center of our universe

Answer 33

Geocentric

Question 34

the theory that the Sun is the center of our universe

Answer 34

Heliocentric

Question 35

_____ means to spin around an axis.

Answer 35

Rotate

Question 36

_____ means to move in a circular path.

Answer 36

Revolve

Question 37

Magnitude expresses a _____.

Answer 37

Leaser and Greater amount

Question 38

The mass of one object and the mass of a second object determines the _____ between them.

Answer 38

Force of Attraction

Question 39

A _____ is a smaller body revolving around a larger body.

Answer 39

satellite

Question 40

_____ established the true shapes of planetary orbits.

Answer 40

Johannes Kepler