Unit 8 Electricity and Magnetism Test Review

Static electricity builds up in the dryer as clothes rub together. When clothes are pulled out of the dryer a spark can be produced. What could be put in the dryer that would attract the extra electrons and reduce the static electricity? 

• Balls of aluminum foil

• Balls of plastic

• Balls of pieces of paper

• Balls of wood

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The atmosphere removes the build-up of static electricity through —

clouds

thunder

lightning

rain

• clouds

• thunder

• lightning

• rain

The shown experiment is conducting static electricity through —

• an insulator

• a transmitter

• a conductor

• a transistor

Tags

NGSS.MS-PS2-3

Which two examples will most likely create static electricity when rubbed together?

• Balloon and hair

• Hands and fingers

• Feet and carpet

• Branches and twigs

The build up of electric charges on an object is called —

• electric field

• alternating current

• static electricity

• closed circuit

What device converts mechanical energy into electrical energy?

• electric motor

• electric generator

• electric current

• electromagnet

What is a device that converts electrical energy into mechanical energy called ?

• electric current

• electric motor

• electric generator

• electromagnet

Tags

NGSS.MS-PS3-5

A student performed an experiment to check whether objects are good or bad conductors of electricity. The student makes a circuit using different objects, as shown, and checks if the light bulb is lit or not. He then makes a table listing his observations.

What (two) statements can be concluded from the experiment?

• Clay is a good conductor of electricity.

• A popsicle stick is a good conductor of electricity.

• A coin is a bad conductor of electricity.

• An iron nail is a good conductor of electricity

• An eraser is a bad conductor

Which of the following are NOT good conductors of electricity?

• copper wire

• aluminum can

• winter glove

• iron nail

• wooden spoon

Why is a bulb brighter when it is powered by two batteries rather than one?

• The flow of electricity in the circuit is greater.

• The flow of electricity in the circuit is the same.

• The flow of electricity in the circuit is less.

• The bulb will not glow brighter with two batteries.