SP2b Renewables and non-renewables

Question 1

What does non-renewable mean?

Answer 1

cannot be replenished.

Question 2

What does renewable mean?

Answer 2

can be replenished.

Question 3

Describe main non-renewable sources (3linked)

Answer 3

Gas, coal or oil is burnt in furnace - water is heated and turned into steam in boiler - super heated steam turns the blades of the turbine shaft - in the generator a coil is turned inside the magnetic field to produce an electical current.

Question 4

Describe main renwable sources (3)

Answer 4

Solar - heat and light energy from the sun - solar cell tech converts solar energy into usable electricity.
Wind - energy from wind - wind passes over blades of a turbine causing them to turn, then rotating a shaft that turns a generator that converts kinetic energy into electrical energy.
Hydroelectric - energy from rivers - Often dam built to increase energy stored and control flow through a turbine - energy used to turn a turbine and generate electricity (hydroelectric power).

Question 5

How are non-renewable and renewable sources used (3)

Answer 5

to heat or cool space
for transportation
for electricity generation