PS.9 Review Set #1

Why does a person's hair move when a balloon is rubbed across a piece of wool fabric and then placed on a person's hair?

• Force of gravity

• Force of friction

• Force of magnetism

• Force of static electricity

When energy changes form, some of the energy is always changed into

• Chemical energy

• Mechanical energy

• Heat energy

• Radiant energy

Tags

NGSS.HS-PS3-4

Lightning is a form of

• Sound energy

• Chemical energy

• Electrical energy

• Nuclear energy

The following is an image of

• Generator

• Electromagnet

• Static electricity

• Current electricity

On a dry winter day, a person is walking

across the carpet in their stocking feet. They

reach for the door knob and get a shock!

That was fun, so they try it again. The

person drags their feet along the carpet and

tries to get a shock with other objects. It

works on the TV, it works on another

person, it works on the light switch but not

on the wooden cupboard door. Why did the

cupboard door not create a spark or a

shock?

• If negative particles are too far away,

  they are not attracted to other

  negative particles.

• Wood is an insulator not a conductor of

  electricity.

• The wooden cupboard is too large.

• They need to build up more static

  electricity to shock wood.

Static electricity builds up in the dryer as

clothes rub together. When clothes are

pulled out of the dryer a spark can be

produced. What could be put in the dryer

that would attract the extra electrons and

reduce the static electricity?

• Balls of aluminum foil

• Balls of plastic

• Balls of pieces of paper

• Balls of wood

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Students are conducting investigations at

lab stations. At station one, a balloon is

rubbed on your hair ten times. At station

two, a student's hair is combed with a plastic

comb ten times. At each station, static

electricity is generated. Which one would

attract more pieces of paper?

• The comb because it is harder.

• The comb because it is smaller.

• The balloon because it is lighter.

• The balloon because it is larger.

Tags

NGSS.MS-PS2-5

What happens to the charges in a person when they slide down a plastic slide?

• The electrons from the person go to the slide

• The person becomes a velociraptor.

• They go into the clouds.

Tags

NGSS.MS-PS2-5

Static Electricity is when electrons build up on an object

• 
• 

Tags

NGSS.MS-PS2-3

What kind of charge do electrons have?

• positive

• negative

• none (neutral)

Tags

NGSS.MS-PS2-3