igcse Energy

A coal-fired power station generates electricity. Coal is burnt and the energy released is used to

boil water. The steam from the water makes the generator move and this produces electricity.

Which words are used to describe the energy stored in the coal and the energy of the moving

generator?

• coal - chemical, generator - hydroelectric

• coal - chemical, generator - kinetic

• coal - geothermal, generator - hydroelectric

• coal - geothermal, generator - kinetic

Which energy source is one that is used to boil water to make steam in power stations?

• energy from tides

• energy from waves

• hydroelectric energy

• nuclear energy

Which energy source is renewable and reliably available at all times?

• coal

• geothermal

• nuclear

• wind

A ball is dropped onto a hard surface and bounces. It does not bounce all the way back to where

it started, and so has not regained all of its original gravitational potential energy.

Which statement accounts for the loss of gravitational potential energy?

• Energy was destroyed as the ball hit the ground.

• Energy was destroyed as the ball travelled through the air

• The chemical energy and elastic energy of the ball have increased.

• The internal (heat) energy of the ball and its surroundings has increased

Which energy resource is used to generate electricity without using any moving parts?

• geothermal

• hydroelectric

• nuclear

• solar

Which source of energy involves the splitting of heavy atoms?

• chemical

• nuclear

• geothermal

• hydroelectric

A cyclist travels down a hill from rest at point X, without pedalling.

The cyclist applies his brakes and the cycle stops at point Y.

Which energy changes have taken place between X and Y?

• gravitational potential → kinetic → thermal (heat)

• gravitational potential → thermal (heat) → kinetic

• kinetic → gravitational potential → thermal (heat)

• kinetic → thermal (heat) → gravitational potential

Which form of energy is used to generate electrical energy in a tidal power station?

• chemical energy

• gravitational energy

• internal energy (thermal energy)

• nuclear energy

Electrical energy may be obtained from nuclear fission.

In which order is the energy transferred in this process?

• nuclear fuel → generator → reactor and boiler → turbines

• nuclear fuel → generator → turbines → reactor and boiler

• nuclear fuel → reactor and boiler → generator → turbines

• nuclear fuel → reactor and boiler → turbines → generator

A car is stationary at the top of a hill with the engine switched off. The brakes are released and

the car rolls down the hill.

At which labelled point does the car have the greatest kinetic energy? Ignore friction.

• A

• B

• C

• D