Electric Charges

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will pop.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.

• True
• False

Static charges build up when

• protons move within an object
• electrons move within an object
• neutrons move within an object
• the nucleus moves within an object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If two objects with static charge are attracted, what do you know about them?

• They are both positively charged.
• They are both negatively charged.
• One is positively charged and one is negatively charged, but you won't be able to tell which is which.
• One is positively charged and one is negatively charged, and you can tell which is which by looking at them.

Tags

NGSS.MS-PS2-3

Rubbing a balloon on hair is an example of static charge build up created by....

• conduction
• friction
• induction
• hairduction

Tags

NGSS.MS-PS2-3

Static electricity is:

• electricity flowing in a wire
• the buildup of electric charges on an object
• when protons move between objects

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• contact.
• static electricity

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

Elements that are shiny and good conductors of electricity are _____.

• colloids
• metalloids
• metals
• nonmetals

Which of the following an insulator?

• copper
• wood
• silver
• salt water

Tags

NGSS.HS-PS2-6