Exercise test for unit 10

Once non-renewable energy sources are used _______________ they are gone forever.

• out

• up

• for

• off

Many chemicals have a damaging effect ______________ environment.

• on

• in

• to

• for

Renewable energy is also called “____________ energy” because it doesn’t pollute the air.

• inexhaustible

• available

• clean

• dangerous

____________ the pollution it cause, coal still plays an important role in the production of electricity around the world .

• Despite

• Due to

• Even though

• However

What ________ if carbon dioxide levels continue to increase?

• happen

• will happen

• will be happened

• will be happening

The use of wind energy is growing rapidly because it is widely available and ____________________.

• environmentally friendly

• environmentally friendly

• environment friendly

• friendly environmental

Using solar panels at home can help _____________ your electric bill and your carbon footprint.

• reduce

• increase

• provide

• convert

Wind power is the most promising _______________ source of energy.

• non-renewable

• natural

• limited

• alternative

You can save much water by ______________ .

• using energy saving light bulbs

• using biogas for cooking

• taking showers instead of baths

• walking or riding a bike to school

‘Is it difficult to reduce our carbon footprints?’ ‘________________’

• It depends on the way you think.

• Not at all. Just practicing the 3R’s.

• It’s not if we still rely on fossil fuels.

• I’m not sure. What will happen?