Energy & Natural Electricity grid

Question 1

Where is electricity generated?

Answer 1

In a power station

Question 2

STEP 1 of the coal-powered power station process is?

Answer 2

Pulverisation of the coal. When large chunks of coal are crushed into a fine powder.

Question 3

STEP 2 of the coal-powered power station process is?

Answer 3

The coal is transported to a furnace where it is burnt.

Question 4

STEP 3 of the coal-powered power station process is?

Answer 4

When the thermal (heat) energy from burning the coal is used to boil water and this generates steam.

Question 5

STEP 4 of the coal-powered power station process is?

Answer 5

Once steam is generated, it pushes the blades of the turbine so that it spins

Question 6

STEP 5 of the coal-powered power station process is?

Answer 6

The turbine is connected to the shaft of the generator. This generator then generates electricity by rotating large magnets within the wire coils

Question 7

Name the disadvantages of nuclear power plant:

Answer 7

1. Once the nuclear fuel has been used, it cannot just be thrown away in a city dump
2. Damage animals & plants
3. Must be stored safely/disposed of carefully
4. Storing it safely is expensive

Question 8

Name the advantages of nuclear power plant:

Answer 8

1. One of the most low-carbon energy sources
2. Has one of the smallest carbon footprints
3. One of the answers to the energy gap
4. It’s essential to our response to climate change & greenhouse gas emissions
5. Reliable & cost effective

Question 8

Name 3 reasons why nuclear power must be stored safely/disposed of carefully?

Answer 8

1. It takes thousands of years for the nuclear waste to decay to safe levels of radioactivity
2. So that it doesn’t cause any damage
3. Fall into nuclear arms manufacturers

Question 9

How do you workout the cost of energy consumption?

Answer 9

Energy = Power X Time

Question 10

Provide definition of solar energy:

Answer 10

Radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity.

Question 11

What are the advantages of solar energy?

Answer 11

✓ Renewable energy source (no carbon
emissions)
✓ Will save on costs (long term)
✓ Low maintenance costs

Question 12

What are the disadvantages of solar energy?

Answer 12

✓ Weather dependant
✓ Solar energy storage is expensive
✓ Requires a lot of space

Question 13

Provide definition of wind energy:

Answer 13

Electrical energy obtained from harnessing the wind with windmills or wind turbines.

Question 14

Provide definition of Hydroelectric energy:

Answer 14

It is a form of energy that harnesses the power of
water in motion—such as water flowing over a
waterfall or from a dam —to generate electricity.