Forces and Motion

A car is moving forward. A force pushes on the back of it. How does the force change it?

• It makes the car turn

• It makes the car stop

• It makes the car go faster

• It makes the car go slower

I throw a ball in the air. What will the force of gravity cause the ball to do?

• Speed up as it goes higher and higher

• Slow down as it falls

• Change direction and come back down

• Remain in the air

What causes a change in the speed of a moving object?

• force

• temperature

• change in mass

• change in location

What object travels the slowest?

• object that went 10 meters in 10 seconds

• object that went 10 meters in 12 seconds

• object that went 10 meters in 14 seconds

• object that went 10 meters in 9 seconds

What objects are affected by Earth's gravity?

• only objects that have mass

• only objects that live in water

• only objects made of metal

• only objects heavier than air

What effect does gravity always have on Earth?

• makes objects move

• makes objects stay still

• pushes objects upward

• pulls the object downward

The pull of gravity on Earth is caused by

• air pressure

• mass of Earth

• volcanoes erupting

• Earth's orbit around the sun

If you bounce a ball on the floor it goes up and comes back down. What causes it to come down?

• magnetism

• gravity

• electricity

• friction