Energy Transformations Review

Energy Transformations

All the energy in the UNIVERSE is already here and will always be here.

Law of Conservation of Energy

states that energy cannot be created or destroyed, it can only change forms.

Multiple Choice

When energy is released, it disappears.

• True

• False

Energy Transformation

is the process of energy changing from one form to another.

Example:

Battery-powered flashlight

Chemical potential --> electrical--> radiant (light)

Complete the following energy flows on your answer sheet!

Sun > __>__>__> Music

Fill in the empty blanks on your answer sheet with the correct energy flows. The first one has been done for you.

River water>__>__>

__>__>Cool Air

Propane gas>__>__

>Hot Air Balloon

Sun>__>__>__>__>

__>hair dryer

Multiple Choice

What energy transformation takes place when you turn on an electric light?

• Chemical > light + heat

• Chemical > electrical + heat

• Mechanical > light + heat

• Electrical > light + heat

Dropdown

Energy cannot be ​

Select answer

or ​

Select answer

just ​

Select answer

.

Drag and Drop

Toasting bread in a toaster would be ​

Placeholder

​

Placeholder

energy to ​

Placeholder

​ energy

Drag these tiles and drop them in the correct blank above

transforming

electrical

heat

Multiple Choice

What energy conversions take place when you vigorously rub your hands together?

• friction => heat

• chemical => thermal

• mechanical => thermal

• kinetic => chemical

Multiple Choice

Which of these is an example of light energy being transformed into chemical energy?

• A glow stick lights up when broken.

• Water heated by the sun evaporates.

• A plant makes sugar in the sunlight.

• A battery causes a buzzer to vibrate.

Multiple Choice

The form of energy involved in eating a peanut butter and jelly sandwich can be transformed into riding a bike. What types of energy occur in this transformation?

• Nuclear - biomechanical

• Chemical - mechanical

• Potential - kinetic

• Electromagnetic - thermal

Multiple Choice

What two forms of energy are given off by a burning candle?

• heat and light

• mechanical and electrical

• nuclear and light

• potential and heat