Question 1

What is the natural force that pulls everything down towards the Earth?

Accepted Answer

Gravity

Answer

Newton

Answer

Friction

Answer

Velocity

Question 2

Why does a bouncing ball not push itself back into the sky?

Accepted Answer

Gravity

Answer

Velocity

Answer

Magnetic force

Answer

Electrical force

Question 3

Which of the following phenomena are caused by the same force that makes objects fall toward the Earth?

Accepted Answer

The Earth’s orbit around the sun

Answer

Sunlight traveling to the planets

Answer

Rocks falling to the ground during a landslide

Answer

None of the above

Question 4

Why would a person weigh less on the Moon than on Earth?

Accepted Answer

The Earth has more mass than the Moon.

Answer

The Earth has more gravity than the Moon.

Answer

The Earth has less gravity than the Moon.

Answer

The Earth has less mass than the Moon.

Question 5

What type of simple machine is a wheelchair ramp?

Accepted Answer

An inclined plane

Answer

A wedge

Answer

A pulley

Answer

A wheel and axle

Question 6

How does a pulley system change forces when used to lift an object?

Accepted Answer

When the man pulls down on the rope to raise the object, the force is being transferred through the machine instead of having to lift the object by himself.

Answer

The pulley acts like a second pair of hands and lifts the object on its own.

Answer

The pulley allows for energy to be transferred from the person to the crate.

Answer

The pulley uses force from the crate to pull the man down.

Question 7

What kind of simple machine are the threads on screws?

Accepted Answer

Inclined planes

Answer

Wedges

Answer

Fulcrums

Answer

Blades

Question 8

What happens to a bus driving on an icy spot that begins to slide?

Accepted Answer

A decrease in friction causes the bus to slide.

Answer

An increase in velocity causes the bus to slide.

Answer

A decrease in mass causes the bus to slide.

Answer

An increase in gravity causes the bus to slide.

Question 9

Which situation best demonstrates balanced forces?

Accepted Answer

A cookie jar sits on the counter.

Answer

A toy car slows down on the carpet.

Answer

A girl speeds up on a bicycle.

Answer

A boy pushes a box uphill.

Question 10

What will happen to a merry-go-round if a greater force is applied to push it?

Accepted Answer

The merry-go-round will spin faster.

Answer

The merry-go-round will come to a stop.

Answer

The merry-go-round will spin slower.

Answer

The merry-go-round will change direction.

Question 11

What natural force pulls everything down towards the Earth?

Accepted Answer

Gravity

Answer

Newton

Answer

Friction

Answer

Velocity

Question 12

Why does a bouncing ball not push itself into the sky?

Accepted Answer

Gravity

Answer

Magnetic force

Answer

Velocity

Answer

Electrical force

Question 13

Which of the following phenomena is caused by the same force that causes objects to fall towards the Earth's surface?

Accepted Answer

The Earth’s orbit around the sun

Answer

Rocks falling to the ground during a landslide

Answer

Sunlight traveling to the planets

Answer

None of the above

Question 14

Why would a person weigh less on the Moon than on Earth?

Accepted Answer

The Earth has more mass than the Moon.

Answer

The Earth has less mass than the Moon.

Answer

The Earth has more gravity than the Moon.

Answer

The Earth has less gravity than the Moon.

Question 15

Which statement best supports the claim that gravitational force affects motion?

Accepted Answer

Gravitational force pulls objects toward the center of the Earth, causing them to fall when dropped.

Answer

Gravitational force is a natural phenomenon only affecting objects in space.

Answer

Gravitational force pushes objects away from each other.

Answer

Gravitational force has no impact on objects on Earth.

Question 16

What type of simple machine is a wheelchair ramp?

Accepted Answer

An inclined plane

Answer

A wheel and axle

Answer

A pulley

Answer

A wedge

Question 17

How does a pulley system change forces when lifting an object?

Accepted Answer

When the man pulls down on the rope to raise the object, the force is being transferred through the machine instead of having to lift the object by himself.

Answer

The pulley uses force from the crate to pull the man down.

Answer

The pulley allows for energy to be transferred from the person to the crate.

Answer

The pulley acts like a second pair of hands.

Question 18

What is the expected outcome when 24 students play tug of war against their teacher?

Accepted Answer

The 24 students will win since the forces are unbalanced because they will have more force pulling on their side compared to the one teacher.

Answer

It will result in a tie since their forces are balanced.

Answer

The teacher will win since the forces are balanced.

Answer

It cannot be predicted since balanced and unbalanced forces are random.

Question 19

What type of force is present when a book is sitting still on a table?

Accepted Answer

Balanced

Answer

Unbalanced

Answer

Non-contact

Answer

Electrical

Question 20

What happens to a merry-go-round when a greater force is applied?

Accepted Answer

The merry-go-round will spin faster.

Answer

The merry-go-round will change direction.

Answer

The merry-go-round will come to a stop.

Answer

The merry-go-round will spin slower.

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