Energy

Which of the following is a source of energy?

• light

• sound

• heat

• coal

Answer explanation

A source of energy is where the energy comes from.

Which one of the following is a form of energy?

• light

• wood

• bagasse

• petrol

The Sun, food, petrol, and wind are important ____________ of energy.

• forms

• sources

• types

• categories

Coal, petrol and natural gas are examples of ______ fuels.
(Type your answer in the boxes and then click "🡢")

How is natural gas is used at home? For ___________

• drinking

• eating

• cooking

• washing

Answer explanation

Natural gas is also known as cooking gas.

Animals and human beings obtain ________ energy from food.

(Type your answer in the boxes and then click "🡢")

The source of energy used by sailing boats is from the ____.

• sun

• moon

• earth

• wind

Answer explanation

Sailing boat

Form of energy = movement energy

Source of energy = the wind

State which form(s) of energy is produced in the following examples: -

1. (1) Dog barking: __________

2. (2) Fan switched on: _______

   1. (3) Fire: ________________

   2. (Type your answers and then click "🡢")