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Worksheets8th 3.3 Gravity and Motion
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
Newton’s first law of __________ says that an object at rest will stay at rest and an object in motion will stay in motion unless acted on by a force.
a)
inertia
b)
gravity
c)
movement
d)
motion
2.
Newton’s law of _________ gravitation states that every object in the universe attracts every other object.
a)
limited
b)
universal
c)
planetary
d)
motion
3.
Inertia and _________ combine to keep Earth in orbit around the sun and the moon in orbit around Earth.
a)
stars
b)
gravity
c)
asteroids
d)
friction
4.
Gravity plays an important role in forming __________, stars, and planets.
a)
galaxies
b)
asteroids
c)
solar systems
d)
an accretion
5.
In which direction does Earth’s gravity pull the moon?
a)
outward
b)
inward
c)
it does not pull the moon
d)
sideways
6.
What attracts all objects toward each other?
a)
magnets
b)
attractive people
c)
gravity
d)
inertia
7.
What is the measure of the force of gravity on an object called?
a)
weight
b)
height
c)
mass
d)
density
8.
An object with greater _______ is more difficult to stop or start.
a)
mass
b)
inertia
c)
density
d)
weight
9.
The _______ of two objects and their distance from each other determine the gravitational force between them.
a)
length
b)
distances
c)
masses
d)
densities
10.
What is the amount of matter in an object?
a)
atoms
b)
density
c)
mass
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