fourth unit 1 sec term

electric wires are made of …………………..

• copper

• paper

• wood

• glass

in the battery of a toy car ……………………energy is converted into electric energy.

• chemical

• light

• sound

• thermal

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

The energy source in the toy car is…………..

• battery

• water

• wind

• sea

Output energies of any device means …………………. Energy

• Used

• consumed

• produced

• no correct answer

Input energies of any device means …………………. Energy

• generated

• consumed

• produced

• no correct answer

The………………….on the rover curiosity convert solar energy into……………………..energy which is used to charge its batteries.

• Solar panels-electrical

• batteries-electrical

• Solar panels-sound

• batteries -sound

Energy is lost in hair dryer in form of ………………………..

• Sound

• kinetic

• chemical

• electric

To explore mars we use …………………………

• Airoplane

• submarine

• curiosity

• rocket

Burning wood produce …………… energy which is used in heating water.

• thermal

• sound

• light

• electric