Lesson 4.4 - Sustainability

Green desalination is different from normal desalination because

• green desalination uses fossil fuels

• green desalination uses renewable energy

• green desalination produces more pollution

• they are both the same

Fossil fuels damage the environment because

• they produce pollution

• they produce energy

• they produce electricity

• they produce clean water

Fossil fuels are considered a

• renewable source

• non-renewable source

• perpetual source

• none of the answers are correct

Nuclear energy is a good alternative source of energy because

• it produces very little energy

• it produces a large amount of energy

• it causes pollution

• it creates radioactive waste

At this time in history most of our energy comes from

• renewable sources like solar energy

• non-renewable like coal and gas

• the sun

• water

One disadvantage of solar energy is

• it is a clean source of energy

• it does not produce any pollution

• it is expensive (high cost)

• it is inexpensive (low cost)

Solar energy can work even on cloudy days.

• True

• False

One disadvantage of nuclear energy is

• a) an accident can cause radiation to be released into the environment

• b) a radioactive waste is produced

• c) it reduces CO2 emissions

• both a and b