Energy Transformations and Electricity Generation

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

What energy transformations take place when a battery-operated radio is in use?

• Electrical to chemical to light

• Sound to chemical to kinetic

• Chemical to electrical to sound

• Light to electrical to thermal

Which of the following devices transforms electrical energy into kinetic energy?

• An e-reader

• a fan

• a manual pencil sharpener

• ipod

In energy transformations, "wasted energy" usually takes what form?

• heat
• chemical energy
• light
• sound waves

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed
• created, saved
• created, destroyed
• lost, found

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Gravitational

Energy transformations occur when...

• energy is created through conduction
• energy changes from one form to another
• two forces slide together that are touching
• a chemical reaction takes place

A material that transfers heat very well is called a _________.

• insulator
• conductor
• radiator
• transistor

A material that does not allow heat to transfer well is called a(n) _______.

• conductor
• blocker
• insulator
• blanket

hydro energy

wind energy

geothermal energy

wave energy

All of these are __________________________ energy sources.