E7 - Unit 10 - 15/3

The wind, the sun, and the wave are some types of __________ sources of energy.

• changeable

• alternative

• cheap

• costly

Remember to __________ the lights before going to bed.

• turn

• turn on

• turn off

• stop

People will reduce energy __________ as much as possible.

• consume

• consumption

• expense

• expenses

Nuclear power is expensive and dangerous __________ our environment.

• for

• to

• in

• with

Human is looking for a clean, cheap and __________ sources of energy.

• effective

• effect

• effectively

• effectiveness

Low energy light bulbs should be used to __________ electricity.

• spend

• buy

• convert

• save

We must __________ the amount of water our family used every day.

• lower

• reduce

• lessen

• narrow

Fossil fuels are very common in our society but they __________ the environment.

• renew

• provide

• waste

• pollute

When you save energy, you not only save money, you also reduce the demand for __________ such as coal, oil, and natural gas and that is a great way to play a part in saving the planet.

• carbon footprint

• electricity

• fossil fuels

• biogas

__________ energy is produced by collecting sunlight and converting it into electricity.

• Hydro

• Nuclear

• Solar

• Wind