Quiz about 5.PS2.3 Review Earth's Gravitational Force

Question 1

Center of gravity is the exact _______ of an object's mass.

Accepted Answer

center

Answer

left

Answer

middle

Answer

total

Question 2

The Earth is pulling us, but we are also pulling the Earth.

Accepted Answer

true

Answer

false

Question 3

_________ is the pull from Earth that keeps objects from floating into space.

Accepted Answer

Gravity

Answer

Mass

Answer

Inertia

Question 4

Imagine an object falling to the Earth. Which of the following most accurately describes the motion of that object?

Accepted Answer

It falls toward the center of the Earth.

Answer

Its motion is random as it falls.

Answer

It falls toward the nearest solid ground.

Answer

It falls southward.

Question 5

In an experiment, six people at different places around the Earth drop an apple at the same time. Which apples will fall to the Earth?

Accepted Answer

All of the apples will fall to the Earth.

Answer

Only apple U will fall to the Earth.

Answer

Only apples U and Z will fall to the Earth.

Answer

Only apples U,V,Y & Z will fall to the Earth.

Question 6

No matter where you are on Earth, the center of the Earth is always _______.

Accepted Answer

straight down

Answer

straight up

Answer

to the South

Answer

straight ahead

Question 7

What would happen if the boys drop a rock from their locations?

Accepted Answer

Both the rocks dropped from location A and location B will fall to the ground.

Answer

The rock dropped from location A will fall to the ground, but the rock dropped from location B will fall into outer space.

Answer

Both the rocks dropped from location A and location B will float in the air.

Question 8

A student describes the directions of gravity as "down". Which is the better explanation?

Accepted Answer

"Down" describes the direction toward the center of the Earth.

Answer

"Down" describes the direction that the Earth is pulled toward the Sun.

Answer

"Down" describes the direction toward the South Pole.

Answer

"Down" describes the direction the Earth is rotating.

Question 9

Which of the following is true of Earth's gravity?

Accepted Answer

It pulls objects toward the Earth's surface without touching them.

Answer

It only has an effect on the Moon and the Sun.

Answer

It only has an effect on objects farther than ten meters from the Earth's surface.

Question 10

What keeps objects on Earth from floating into space?

Accepted Answer

gravity

Answer

inertia

Answer

mass

Answer

volume

Question 11

Which statement is the best definition for gravity?

Accepted Answer

Gravity is the natural force that causes objects to move toward the center of the Earth.

Answer

Gravity is a force that pulls objects toward the South Pole of the Earth.

Answer

Gravity is responsible for keeping objects in orbit around one another; gravity is strongest on the Moon and weakest on the Earth.

Question 12

Which of the following statements gives the best evidence that gravity pulls objects toward the center of the Earth?

Accepted Answer

Asteroids approaching the Earth from any direction get pulled toward the Earth.

Answer

Several iron nails are pulled toward a strong magnet.

Answer

Winds blow from the South Pole toward the Equator.

Question 13

The pulling force between two objects is stronger when the objects are ____________.

Accepted Answer

close together

Answer

far apart

Question 14

Why do skateboarders always fall back to Earth?

Accepted Answer

gravity

Answer

mass

Answer

inertia

Answer

velocity

5.PS2.3 Review Earth's Gravitational Force

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