P.3.6 Forces Unit practice test

When you toss a penny into the air, gravity will pull the ball -

• to the right

• to the ceiling

• to the ground

• to the left

What are two way that magnets are used?

• paperclips

• a refrigerator door

• credit cards

• baseballs

How is magnet on a cabinet door useful? The magnet and the iron plate -

• Causes the door to open wider
• Prevents the door from closing
• Makes it easier to see inside

• holds the door of the cabinet closed

Magnets can be used to stick notes on a refrigerator. For this to work, the refrigerator must–

• be made of iron or steel

• be made of glass

• have a smooth surface
• be painted with bright colors

Predict which surface would stop a rolling ball first.

• snow

• soft dirt

• grass

• paved road

In the previous question, what causes the rolling ball to stop faster?

• Gravity
• Friction
• Magnetism

• The wind

Which is the best way to use a toy car to demonstrate the force of gravity?

• put the toy car on a shelf

• Put the car on the floor with your hand

• roll the car down a ramp

• push the toy car across the table

If you hold a magnet over a nail sitting on a table, the nail will move

• left

• right

• up

• down

What happens when you place a magnet near a pile of iron filings?

• The iron filings are repelled away

• The iron filings are attracted to the magnet

• The iron filings start to glow

• Nothing happens

What would happen if you roll a ball on a slope?

• The ball will move upwards

• The ball will stay in place

• The ball will roll downwards due to gravity

• The ball will float in the air