Electric Force

What types of charges repel?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Neutral and Neutral

Tags

NGSS.3-PS2-3

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

The closer the charges, the ___________ the force between them

• closer
• further
• stronger
• weaker

Tags

NGSS.3-PS2-3

A balloon has a negative charge.  The glass rod has a positive charge.  What will happen when the glass rod is brought near the balloon?

• The balloon will be attracted to the rod
• The balloon will be repelled by the rod
• The balloon will remain in place
• The balloon will spin in circles

Tags

NGSS.3-PS2-3

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

Tags

NGSS.5-PS1-3

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not
• A conductor allows electricity to flow through it easily and an insulator does not.
• An insulator is magnetic and a conductor is not
• A conductor is magnetic and an insulator is not

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3

The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?

• Copper is a conductor of electricity, and plastic is an insulator of electricity.

• Copper is an insulator of electricity, and plastic is a conductor of electricity.

• Copper is a conductor of electricity, and plastic is an insulator of heat.

• Copper is an insulator of electricity, and plastic is a conductor of heat.

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3

Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.

• +,+
• +,-
• -,+
• -,-

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What three things can't conduct electricity?

• rubber,wood,gold
• fabric,wood,rubber
• cold glass, wood, deer
• coffe,tin,book

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

• conduction
• friction
• induction
• hairduction

Tags

NGSS.MS-PS2-3