Renewable And Non Renewable Energy

Question 1

What is renewable energy?

Answer 1

Energy from renewable sources naturally replenished on a human timescale

Question 2

Types of renewable energy

Answer 2

Solar power
Wave energy
Biomass fuel
Wind power
Geothermal energy
Tidal power
Hydro electric power HEP

Question 3

Advantages and disadvantages of solar power

Answer 3

Advantage
No finite resources involved so less environmental damage
No atmospheric pollution
The sun is the greatest source of heat and light energy

Disadvantage
Needs the sun to shine
When demand is high not always to cope

Question 4

Advantages and disadvantages of wave energy

Answer 4

Advantages take
Generated by the sea - water covers 72% of the planet
Always rough seas with bad weather
Tidal effect of the moon always creates moving sea and waves

Disadvantages
Hazard to shipping
Disrupt marine life

Question 5

Advantages and disadvantages of biomass fuel

Answer 5

Organic material egAnimal waste and woody fuels
Adv. always available, no carbon dioxide release
Dis. Methane release, requires much water, can cause deforestation

Question 6

Advantages and disadvantages of wind power

Answer 6

Wind can be strong and in some places blows most of
time
Adv. no fuel cost or polluting gases
Dis. Noisy wind farms, ugly to look at,not always windy

Question 7

Advantages and disadvantages of geothermal energy

Answer 7

Energy from hot rocks inside the earth
Adv. does not burn fossil fuel and very efficient
Dis. Costly to set up, not many suitable locations

Question 8

Advantages and disadvantages of tidal power

Answer 8

Hydro power using sea tides
Adv. high energy density, inexhaustible source of energy.
Dis. Danger to sea life and shipping, erodes coastline, increases silt deposit

Question 9

Advantages and disadvantages of HEP

Answer 9

Energy provided by water water power gravity and buoyancy
Adv. clean and renewable relying on water cycle
Dis. Dams cause geological damage, very expensive to build dams

Question 10

Coastline - good for renewable energy and electricity but how?

Answer 10

Coastline is good for wave energy.

Electricity could be produced through wind energy and wave power.

Question 11

Mountains - produce renewable energy but how?

Answer 11

HEP as water comes down the streams and rivers and can be dammed for HEP
HEP water pressure and gravitational energy and high rainfall
Wind energy from high winds on the mountains

Question 12

How much of the earth is sea, hostile land and mountains and fertile for crops

Answer 12

3/4 sea
Of the rest 1/8 is hostile
7/32 is rocky
1/32 is fertile