Topic 1

Question 1

How can you reduce energy waste in a motor?

Answer 1

• use oil
• this reduces friction
• meaning less energy is lost as heat

Question 2

Explain how to reduce energy loss in a house.

Answer 2

Insulation and double glazing windows

Question 3

What are some examples of non renewable energy sources?

Answer 3

Fossil fuels
Nuclear fuel

Question 4

What are some examples of renewable energy sources?

Answer 4

Biofuel , wind , geothermal, tidal , solar

Question 5

What is the issue with using renewable energy sources?

Answer 5

• it is less reliable

Question 6

What is the definition of renewable energy?

Answer 6

Energy that can be replenished as it is used (it will not run out)

Question 7

What is the environmental impact of extracting energy?

Answer 7

• damage to natural habitats
• wind turbines create sound pollution and are considered an eye sore

Question 8

What are the consequences of using fossil fuels ?

Answer 8

• the production of fossil fuels leads to global warming

Question 9

What happens to an objects gravitational potential energy when it moves further away from earth?

Answer 9

It’s gpe increases

Question 10

What happens to the elastic potential energy of a spring as it it stretched?

Answer 10

It’s elastic potential energy increases

Question 11

What happens to the kinetic energy of an object as it speeds up?

Answer 11

Increases