lesson 2 concept 3.1 choose the correct answer

1. In the hair dryer, the electrical energy Is converted Into ............... and.................

energies.

• sound - thermal - kinetic

• kinetic - light - chemical

• thermal - light - chemical

• light - sound - electrical

2. In the washing machine, the.............energy is converted into kinetic and sound

energies.

• light

• electrical

• thermal

• potential

3. You feel warm when you rub your hands together, because.............energy is

converted into thermal energy.

• kinetic

• light

• electrical

• sound

4. Plants can convert the light energy from the Sun into...................energy which is

stored in the plant in the form of sugar.

• sound

• electrical

• chemical

• kinetic

5. When you eat an apple, your body converts the...................energy stored in the apple into........................ energy when you move.

• chemical - electrical

• kinetic - chemical

• electrical - chemical

• chemical - kinetic

6. Electric wires are made of .......................

• copper

• paper

• wood

• glass

7. Which form of energy is not used or produced when you turn on an electric bulb ?

• Electrical

• Light

• Thermal

• Sound

8. When you use the hand bell, the.................... energy is converted into sound energy.

• light

• thermal

• kinetic

• electric

9. Which sentence shows the correct order of energy changes in a flashlight ?

• Chemical ➙ electrical➙ light.

• Chemical ➙ light➙ electrical.

• Electrical➙ chemical➙light.

• Light➙ chemical ➙ electrical

10. If the............... energy doesn't go through the electric fan's wire, it will not turn on.

• sound

• electrical

• kinetic

• thermal