Question 1 (4 points)

Match the example with the law or phenomenon it demonstrates.

Column A
1.	A rocket pushes gas down and lifts off upward.:	A rocket pushes gas down and lifts off upward.
2.	A satellite keeps moving in space without slowing down.:	A satellite keeps moving in space without slowing down.
3.	A space probe speeds up after flying past Jupiter.:	A space probe speeds up after flying past Jupiter.
4.	You must push harder to move a heavy cart.:	You must push harder to move a heavy cart.

Column B

a.

Newton's Second Law

b.Newton's Third Law

c.Newton's First Law

d.Gravity Assist

Question 2 (4 points)

Match the word to its correct definition.

Column A
1.	Gravity:	Gravity
2.	Orbit:	Orbit
3.	Mass:	Mass
4.	Distance:	Distance

Column B

a.The path an object takes as it moves around another object in space

b.A factor that affects how strong gravity is

c.The amount of matter in an object

d.A force that pulls objects with mass toward each other

Question 3 (2 points)

What happens to gravity when the distance between two objects increases?

a	It gets stronger.
b	It gets weaker.
c	It stays the same.
d	It disappears.

Question 4 (2 points)

What two things affect the strength of gravity?

a	Temperature and speed
b	Light and size
c	Rotation and direction
d	Mass and distance