MS PS2-5 Review (Non-Contact Forces)

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?

• The balloon has a positive charge and the comb is neutral.

• The balloon and the comb have the same electrical charge.

• The balloon has a negative charge and the comb is neutral.

• The balloon and the comb have opposite electrical charges.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student wants to study the magnetic forces between three magnets. The student sets up an experiment by hanging three magnets next to each other. Which position will the magnets most likely take once the student places the magnets on the strings?

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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?

• atoms

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

After rubbing a rubber brush on wool, Gilbert is able to use the brush to pick up small strips of paper. What causes the paper to be attracted to the brush?

• gravity

• electric current

• static electricity

• magnetism

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Marty rubbed a balloon on his shirt. The balloon was then able to stick to the wall of the room. Which picture best represents the charges of the particles on the balloon and the wall that cause the balloon to be attracted to the wall?

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Tags

NGSS.MS-PS2-3

Greta passed a comb through her hair several times. She then placed the comb next to a stream of water flowing from a faucet. Greta observed the stream of water bend toward the comb. How did passing a comb through her hair allow the comb to bend the stream of water?

• by making the comb more absorbent

• by giving the comb an electrical charge

• by increasing the thermal energy of the comb

• by breaking some of the chemical bonds in the comb

Tags

NGSS.MS-PS2-3

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?

• atoms

• electrons

• neutrons

• protons

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

• a bat hitting a baseball

• a paper clip attracted to a magnet

• a refrigerator pushed across the floor

• a bicycle tire rubbing against the road

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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?

• The bars have opposite charges.

• The bars have become neutral.

• Both bars have an increase in negatively-charged particles.

• Both bars have an increase in positively-charged particles.

Tags

NGSS.MS-PS2-3

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?

• A repulsive force between the two magnets causes the suspended magnet to swing to the left.

• A repulsive force between the two magnets causes the suspended magnet to oscillate like a pendulum.

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

• An attractive force between the two magnets cause the suspended magnet to oscillate like a pendulum.

Tags

NGSS.MS-PS2-5