7) Energy Types, Transfers and Resources for Electricity

Question 1

Does energy change between forms?

Answer 1

Energy often changes from one form to another.

Question 2

Can energy ever be created or destroyed?

Answer 2

Energy can never be created or destroyed but just transferred

Question 3

If a device has more useful energy coming out of it, what does it make it?

Answer 3

Very efficient

Question 4

What is the not useful energy that comes out of devices called?

Answer 4

‘Waste’ energy

Question 5

How does wind generate electricity?

Answer 5

Kinetic Energy > Electrical Energy

Question 6

How does water generate electricity?

Answer 6

Kinetic Energy > Electrical Energy

Question 7

How does geothermal resources generate electricity?

Answer 7

Thermal Energy > Kinetic Energy > Electrical Energy

Question 8

How does solar heating systems generate electricity?

Answer 8

Light Energy > Thermal Energy

Question 9

How does solar cells generate electricity?

Answer 9

Light Energy > Electrical Energy

Question 10

How does fossil fuels generate electricity?

Answer 10

Chemical Energy > Heat energy > Kinetic Energy > Electrical Energy

Question 11

How does nuclear power generate electricity?

Answer 11

Kinetic Energy > Heat Energy > Kinetic Energy > Electrical Energy

Question 12

What are the pros and cons of fossil fuels?

Answer 12

Non-Renewable; Releases CO2

Question 13

What are the pros and cons of burning wood?

Answer 13

Renewable; Releases CO2; Destroys Habitats

Question 14

What are the pros and cons of wind power?

Answer 14

Renewable; Visual Pollution; Produces Small Amounts of Electricity

Question 15

What are the pros and cons of solar cells?

Answer 15

Renewable; Rely on Weather

Question 16

What are the pros and cons of nuclear power?

Answer 16

Renewable/ Non-Renewable; Dangerous; Many Waste Products