MS PS2-5 Review (Non-Contact Forces)

Front

One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?

Back

The balloon and the comb have the same electrical charge.

Front

On a cold, dry winter day, Brandi moves across a carpet. When she touches the door knob, she receives a shock. Which particles transfer between Brandi’s body and the door knob causing the shock?

Back

electrons

Front

What causes paper to be attracted to a rubber brush after rubbing it on wool?

Back

static electricity

Front

How did passing a comb through Greta's hair allow the comb to bend the stream of water?

Back

By giving the comb an electrical charge.

Front

If a wool sock is dragged across a rug, there is a buildup of static electricity on the wool sock. Which type of particle is transferred between the rug and the sock to cause this static?

Back

electrons

Front

Which of these is an example of a non-contact force acting on an object?

Back

a paper clip attracted to a magnet

Front

Bar 1 is made of glass and has been rubbed with silk. Bar 2 is made of rubber and has been rubbed with fur. If the bars are held close to one another, why will the hanging bar move toward the held bar?

Back

The bars have opposite charges.

Front

The magnet on the right is moved toward the suspended magnet on the left. Which statement describes the interactions of the magnets in terms of their magnetic fields?

Back

An attractive force between the two magnets causes the suspended magnet to swing to the right.