Energy!

The major source of energy for Earth is the--

• Moon

• Ocean

• Sun

• Wind

A device that makes electricity by using chemical reactions, stores energy until it is needed

• toaster

• battery

• flashlight

• pencil sharpener

Electrical energy is changed to __________ in stoves, toasters, and ovens.

• light energy

• thermal energy

• sound energy

• kinetic energy

Sound is produced when a force causes an object or substance to ___?

• stop

• vibrate

• listen

• close

Sound is caused by?

• light radiation

• vibrations

• heat waves

At which point is potential energy greatest?

• W
• X
• Y
• Z

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

The faster an object moves, the ________ kinetic energy it has.

• more

• less

• none of the above

• same

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic
• Both potential and kinetic energy
• none of the above

A ____________ is a push or a pull on an object.

• friction
• force
• magnet
• gravity