Energy Transformations

Question 1

What happens when you rub your hands and they become warm?

Answer 1

You have changed kinetic energy of your moving hands into heat energy.

Question 2

True or false

You can change electrical energy into many different forms of energy.

Answer 2

True

Question 3

What types of energy can electrical energy be changed into?

Answer 3

Light energy
Heat energy
Kinetic energy
Sound energy

Question 4

A candle is meant to turn stored ____ energy into light but some of the stored energy becomes _____.

Answer 4

Chemical

Heat

Question 5

When you use an electrical drill not all of the electrical is changed into _____ energy. Some is lost as ____ energy and some as ____ energy.

Answer 5

Kinetic
Sound
Heat

Question 6

The series of changes is called an energy ____.

Answer 6

Chain

Question 7

Engineers have calculated that only about ____ / fifth of the energy in the petrol goes to the car. The rest is changed to ___ and ___ energy.

Answer 7

One
Heat
Sound