Answers2627 EARTH SPACE SCIENCE AGravity and Motion

Universal Law of Gravitation Answers

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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
2
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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
3

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.
4

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
5

A student is asked to describe the path of a paper airplane that is thrown in the classroom.Which statement best describes the path of the paper airplane?

A
The paper airplane will move in a straight line, according to Newton’s first law of motion.
B
The paper airplane will drop straight to the ground once its inertia gives in to the force of gravity.
C
The paper airplane will create a curved path toward the floor as it is pulled toward Earth’s center.
D
The paper airplane will orbit around the desk because it is the object with the largest mass in the room.
6

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.
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

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.
9

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.
10

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.

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