En 1.2 - Types

Question 1

What are some examples of primary sources of energy?

Answer 1

Fossil fuels (coal, oil and natural gas), solar, wind, waves, biofuels and nuclear fuels.

Question 2

What is a major pollutant produced when fossil fuels are burned?

Answer 2

Carbon dioxide, which is a greenhouse gas and therefore contributes to global warming and climate change.

Question 3

What is a primary source of energy?

Answer 3

A source of energy that occurs naturally and is found in natural resources.

Question 4

Why are fossil fuels non- renewable sources of energy?

Answer 4

They become exhausted because they can only be replaced over considerable periods of geological time.

Question 5

How much has global hard coal production increased over the last quarter of a century?

Answer 5

By 65%

Question 6

What is the largest source of global electricity (40%)?

Answer 6

Coal

Question 7

Where are the known largest reserves of oil found?

Answer 7

Saudi Arabia

Question 8

Where is natural gas found?

Answer 8

In oil or coal deposits underground

Question 9

What are some disadvantages of solar energy?

Answer 9

Large areas of land are needed, it is rarely economical and photovoltaic technology is still expensive compared to fossil fuels

Question 10

When did hydropower produce almost 16 of electricity worldwide?

Answer 10

In 2003

Question 11

Which continent leads the way in wind power?

Answer 11

Europe

Question 12

What is a secondary source of energy?

Answer 12

A secondary source of energy comes from the transformation of primary energy sources e.g. Electricity

Question 13

What is the estimated 2015 world consumption rate of natural gas per year?

Answer 13

3.4 trillion cubic metres of gas per year

Question 14

What is the largest biomass source?

Answer 14

Wood