Unit 11 Test Review

The measurement of how quickly charges flow through a circuit is called _______.

• resistance
• voltage
• current
• static electricity

Electrons in a circuit always flow from areas to areas.

• positive, negative
• negative, positive
• positive, neutral
• neutral, negative

Tags

NGSS.MS-PS2-3

A material through which electrons do NOT flow easily is a(n) .

• insulator
• fuse
• conductor
• semiconductor

Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used?

• plastic plate
• silver spoon
• copper wire
• gold necklace

Tags

NGSS.MS-PS3-3

This piece of safety wire burns up in a circuit if too much current is passed through it.

• short circuit
• insulator
• fuse
• circuit breaker

__________ current is current that changes direction. This is the type of current that comes out of power outlets.

• direct
• alternating
• light
• magnetic

What is the net charge of an atom that has 12 protons and 10 electrons?

• +22e

• +2e

• -2e

• -22e

If two positive charges are near each other, they will experience a ______ force.

• attractive
• repulsive
• large
• small

Tags

NGSS.MS-PS2-3

Which of the following objects has the highest electron affinity?

• wool
• glass
• paper
• plastic

If you rub vinyl and glass together, what will be the resulting charge of the vinyl?

• positive
• negative
• neutral

Tags

NGSS.MS-PS2-3