AnswersSLPS-2001310-EarthSpace B -GFClassification of Living Things

Gravity and Motion Answers

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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
2
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Which statement best explains why objects are pulled toward Earth’s center?

A
Earth has a magnetic force that is strongest at its core.
B
Earth has a much greater mass than objects on its surface.
C
The weight of the atmosphere pushes objects toward Earth's surface.
D
The strength of the Sun’s gravity pushes down on objects at Earth's surface.
3

Which of the moon’s properties prevents it from being pulled inward by Earth?

A
gravity
B
inertia
C
shape
D
structure
4

In addition to how much force Earth exerts on the object, which features of an object affect its weight?

A
mass and location of the object
B
shape and location of the object
C
location of the object and how much energy the object has
D
mass of the object and how much energy the object has
5

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.
6

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
7

Which statement describes gravity?

A
There is no defined unit of measurement for gravity.
B
Gravity is the force that pulls objects toward Earth’s center.
C
Objects that have a small mass will have no gravitational pull.
D
Gravitational pull between two objects decreases as the mass of one increases.
8

The diagram shows the moon and Earth in space.

Question illustration
A
force of Earth’s gravity
B
moon’s attraction to the Sun
C
moon’s motion without gravity
D
orbit of the moon around Earth
9

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
10

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.

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