Force & Motion Review

What is speed?

• When 2 surfaces rub against each other.

• Force that keeps your feet on the ground.

• Rate at which a moving object travels.

• How much something weighs.

Which is an example of friction? (There is more than 1 correct answer.)

• Erasing a mistake on the test.

• Pushing on the brakes to slow a car.

• Rubbing 2 sticks together to start a fire.

Why do we sometimes want to prevent friction?

• Makes it easier to move an object.

• Keep an object from moving.

• Increase the temperature in the air.

• Decrease the temperature in the air.

Which items are attrached to a magnet?

• nails

• paperclips

• a nickel

The _____ the force, the more movement it can produce.

• greater

• slower

• smaller

The most powerful parts of a magnet are at the ends called the _____.

• East Pole & South Pole

• East Pole & West Pole

• North Pole & South Pole

• South Pole & West Pole

Mass is a measurement of how much _____ is in an object.

• force

• matter

• magnetism

• motion

Rubbing your hands together to warm them is an example of _____

• friction

• magnetism

• gravity

• acceleration

On the mood, you would be able to jump much farther than on Earth. Why?

• You weight more on the Moon.

• Earth's gravitational pull is less than on the Moon.

• Moon's gravitational pull is less than on the Earth.

• There is no gravity on the Moon.

Gravity is a force that helps us to _____.

• stay in constant motion

• float in space

• lose weight

• keep our feet on the ground