Energy

Energy is

• the amount of power generated.

• the capacity of a body to do work.

• anything that has a mass and occupies space.

• the force exerted on a body.

Answer explanation

Energy is that which enables a body to do work.

The SI unit of energy is the ...

• Joule

• Watt

• Newton

• Pascal

Chemical energy is the energy contained in

• food, oil and fuels like petrol.

• objects that are above ground.

• objects that are moving.

• atoms.

The type of energy possessed by an object in motion is

• Potential

• Thermal

• Kinetic

• Nuclear

What type of energy is possessed by the ball?

• Kinetic

• Thermal

• Potential

• Conservation

The principle of conservation of energy states:

• Energy cannot be created or destroyed. It also cannot be converted from one form to another.

• Energy can be created and destroyed but it cannot be converted from one form to another.

• Energy can be created but not destroyed and it can be converted from one form to another.

• Energy cannot be created or destroyed but it can be converted from one form to another.

A motor converts

• mechanical energy to electrical energy.

• electrical energy to mechanical energy.

• thermal energy to mechanical energy.

• mechanical energy to thermal energy.

Batteries convert...

• electrical energy to potential.

• chemical energy to light energy.

• electrical energy to light energy.

• chemical energy to electrical energy.

Kinetic energy is equal to...

Potential energy =