Static Electricity

Sandra rubs her socks along the wool carpet as she walks across her house. She grabs onto a metal chair. What will most likely happen as she touches the chair?

• The charge will disappear.

• The chair will repel her.

• She will get a light shock.

• She will build up more charge.

Tags

NGSS.MS-PS2-3

Which sentence best explains why his hair is standing up straight after going down the slide?

• His hair and the slide have like charges, making them repel each other.

• His hair and the slide have opposite charges, making them repel each other.

• The slide caused friction making each of his hairs have a like charge, which repel each other.

• The slide caused friction making each of his hairs have an opposite charge, which attract each other.

Answer explanation

When you go down a slide, electrons move from you to the slide. This causes your hairs to have more positive charges. Objects that have the same charge repel each other. So, each of your hairs tries to repel its neighbor.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the term used to describe the buildup of electrical charges on an object?

• circuit electricity

• negative charge

• static electricity

• positive charge

Alvin and Marcus each rub identical balloons quickly against their hair, creating negative charges in the balloons. What will most likely happen if the boys place their balloons near each other?

• They will repel each other because they each have the same charge.

• They will attract each other because they each have the same charge.

• Both balloons will release their negative charges into the air and become positively charged.

• One balloon will transfer its negative charge to the other and both will become positively charged.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The pictures show a two-step investigation that Amy is performing. Which statement best describes what will happen as negatively charged electrons move from Amy's hair to the balloon?

• Amy's hair will become positively charged, and the balloon will become neutral.

• Amy's hair will become negatively charged, and the balloon will become neutral.

• Amy's hair will become positively charged, and the balloon will become negatively charged.

• Amy's hair will become negatively charged, and the balloon will become positively charged.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In step 2, Amy places the balloon next to a wall and lets go. Which describes what will MOST LIKELY occur?

• The negatively charged balloon will attract the positive charges in the wall, causing the balloon to stick to the wall.

• The negatively charged balloon will repel the positive charges in the wall, allowing the balloon to float away.

• The positively charged balloon will attract positive charges in the wall, causing the balloon to stick to the wall.

• The positively charged balloon will repel the positive charges in the wall, allowing the balloon to float away.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is correct if two objects are rubbed together, and one transfers negative particles to the other?

• The two objects will now have the same charge.

• The two objects will now have opposite charges.

• The two objects will repel each other.

• The two objects will both have a neutral charge.

Look at the pictures of objects below and their current charge. Which picture shows objects that will most likely attract one another?

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• 
• 
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Tags

NGSS.MS-PS2-3

Which of the following is the best description of how static electricity is created?

• Negative charges from an object move to another object when rubbed together.

• Negative charges move in a straight path to a conductor and produce a current.

• Positive charges build up in an object when rubbed against another object.

• Positive charges are produced when two conductors are rubbed together.

Tags

NGSS.MS-PS2-5

Which of these is an example of static electricity?

• A piece of metal is repelled by another piece of metal.

• A current runs through a wire and a light bulb lights up.

• A person is shocked by sticking a fork in a toaster oven.

• A person's hair stands up straight after taking off a sweater.