Unit 8 Review

Match the following terms

• flow of electricity by touching

• Conduction

• machine creates electrical energy

• Static Electricity

• buildup of electric charge in the atmosphere

• Generator

Tags

NGSS.MS-PS3-3

Which of these statements describes how an electric motor works?

• electricity is used to move a turbine

• a permanent magnet is turned into an electromagnet using electricity

• moving turbines cause magnet to stop moving and produce electricity

• electricity creates a magnet that causes other parts of the motor to move

What type of energy does a generator produce?

• electrical energy

• chemical energy

• magnetic energy

• mechanical energy

Using Ohm's law find the current in a circuit that has a resistance of 6 ohms and a voltage of 12 volts.

Hint: volts ÷ ohms = amps

• 2 amps

• 12 amps

• 24 amps

• 1 amp

Match the following properties

• force can attract or repel

• properties of a magnet

• responsible for behavior of lightning

• properties of static electricity

• responsible for the behavior of a compas

• properties of both an electric charge and a magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

True or False: When an electrical current passes through a wire, a magnetic field is created.

• True

• False

Tags

NGSS.MS-PS2-3

Organize these options into the right categories

Groups:

(a) Series Circuit

,

(b) Parallel Circuit

• one bulb gores off the rest remain on

• more bulbs added the dimmer the lights get

• only one path for electricity to flow

• multiple paths for electricity to flow

• all on or all off

• more bulbs added the brightness stays the same

What will happen if an object with a positive charge is pushed toward another object with a negative charge?

• the objects will produce a sound

• the objects will produce smoke

• the objects will repel each other

• the objects will attract each other

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

As you walk across the carpet, electrons collect on your shoes. Based on the picture and description, what charge will your shoes have?

• your shoes will have a negative charge

• the rug will develop a negative charge

• your shoes will have a positive charge

• your shoes charge will not change

Tags

NGSS.MS-PS2-3

When you walk across a rug on a cold, dry winter day, you might touch a doorknob and get a shock. What causes this shock?

• electrons moving from your hand to the rug

• electrons moving from the rug to the wooden door

• electrons moving from your hand to the doorknob

• None of the above

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5