AnswersFL-2001010-MJ EarthSpace Science AThe Expanding Universe

Gravity and Motion Answers

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Which description explains how inertia changes the effects of gravity on objects in the solar system?

A
keeps the Sun stationary
B
pulls asteroids toward Earth
C
causes shooting stars to stop moving
D
prevents planets from pulling into one another
2
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Which statement explains how weight is different from mass?

A
Mass is a varying property.
B
Mass is measured in newtons.
C
Weight is always greater than mass.
D
Weight is a measure of gravitational pull.
3

Which statement describes a newton?

A
It exists only for objects on Earth.
B
It measures the mass of an object.
C
It reflects the amount of force an object exerts.
D
It states that every object attracts another object.
4

Which statement describes Newton’s law of universal gravitation?

A
Mass has little effect on gravity between objects.
B
Gravity pushes objects away from Earth’s center.
C
Gravity does not act between Earth and the moon.
D
Every object in the universe attracts every other object.
5

Which statement explains how gravity and inertia work together?

A
They change the motion of objects.
B
They take turns working on objects.
C
They keep all objects moving at the same speed.
D
They prevent objects from moving in a circular motion.
6

According to Newton’s first law, which characteristic of a moving object would remain constant if there were no other forces acting on it?

A
size
B
mass
C
shape
D
speed
7

The diagrams show objects’ gravitational pull toward each other.

Question illustration
A
Gravity attracts only larger objects toward one another.
B
Gravity attracts larger objects only if they are close to one another.
C
If the masses of the objects increase, then the force between them also increases.
D
If distance between the objects increases, then the amount of force also increases.
8

Which statement describes how Earth compares to the moon?

A
Earth has more inertia than the moon.
B
The moon has more gravitational pull than Earth.
C
The moon rotates at a constant speed while Earth’s speed varies.
D
Earth and the moon will not change their motion when acted on by a force.
9

Which action results from the combination of gravity and inertia working on the moon?

A
the moon’s orbit around Earth
B
Earth’s downward pull on the moon
C
the moon’s push against other planets
D
Earth’s gravitational pull toward the moon
10

Which pair of factors affects the force of gravity between objects?

A
direction and distance
B
mass and distance
C
mass and shape
D
shape and time

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Gravity and Motion Answers — FL-2001010-MJ…