energy resources

Question 1

non renewable energy

Answer 1

these are fossil fuels and nuclear fuel.
they will all run out
damage to environment
are reliable

Question 2

fossil fuels

Answer 2

natural resources from underground over millions of years. burnt to provide energy. includes:
coal, oil and natural gas.

Question 3

renewable energy

Answer 3

will never run out- energy can be renewed as it is used.

do not provide much energy, unreliable, depend on weather

Question 4

solar cells

Answer 4

made from materials to create electricity current.
Used in remote places.
No pollution.
Expensive, but no running cost
Best in sunny countries.
cant make at night

Question 5

wind power

Answer 5

each wind turbine has generator inside, produces electricity. no pollution.
expensive, running costs are small.
Only works when windy.

Question 6

bio fuel

Answer 6

renewable energy created from plant or animal.
Carbon neutral.
Cannot respond to immediate energy demands.
Cost is high.
Forests broke for storage.

Question 7

Hyrdro-electricity

Answer 7

Involves flooding valley by building big dam. No pollution.
Big impact on environment also loss of habitat.
can immediate response.
Expensive but running costs are normal.

Question 8

tidal barrages

Answer 8

big dams, built across river with turbines.
as tide comes, fill estuary. Let out through turbines, at control speed.
No pollution.
Affect view, alter habitat.