Forces

How is the position of a stapler changed when it staples papers together?

• by pulling

• by gravity

• by pushing

• by magnets

How could you demonstrate that an object's position be changed by pulling it?

• Raising the flag on the flag pole

• roll a ball down a steep hill

• type on a keyboard

• use your arm to raise your hand

Imagine you are pulling a wagon behind you. To move the cart forward, what would you need to do?

• apply force in the forward direction

• apply force in the backward direction

• apply friction in the foward direction

• apply friction in the backward direction

A student rolled a ball down a ramp. What could the student do to increase the force on the ball?

• Make no changed to the ramp

• Make the ramp higher at the top

• Roll the ball up the ramp

• Make the ramp higher at the bottom

Which is a measure of the pull of gravity on an object?

• depth

• height

• speed

• weight

Which information in the advertisement is based on fact?

• There is no better way to move a train

• The force of magnetism connects the cars

• This is the most fun you will have all day

• The train cars are so easy to connect, a baby can do it.

A student is using a magnet to move his car down the track. The magnet is pushing the car not pulling, it is being _______

• repelled

• gravity

• attracted

• pulled

When you throw a ball up in the air, what causes it to come down?

• the sun

• gravity

• rain

• a push

How does gravity affect things on Earth?

• Gravity pulls objects apart

• Gravity keeps objects off Earth

• Gravity keeps objects in the center

• Gravity pulls objects toward Earth's center

What would happen if you had magnets with two south poles placed near each other?

• both magnets attract

• both magnets agree

• both magnets push together

• both magnets repel