powering systems

Question 1

what does finite mean?

Answer 1

non-renewable

Question 2

what are 3 types fossil fuels?

Answer 2

.coal
.oil
.natural gas

Question 3

how does a fossil fuel power station work?

Answer 3

.burns fuel
. produces head
. heats water to create steam
.steam drives turbine
.turbine spins generator wich generates electricity.

Question 4

name 3 positives for nuclear energy?

Answer 4

.reliable
.cheap
.clean/low levels of greenhouse gases.

Question 5

name 4 negatives for nucleur energy?

Answer 5

.finite fuel sources
.high initial costs and running costs
.waste produced is dangerous
.risks of major catastrophy

Question 6

list 5 types of renewable energy sources?

Answer 6

1) wind power
2) solar power
3) tidal barrages
4) hydro-electrical power
5) biomass

Question 7

Why is there a drive to use more renewable energy?

Answer 7

. GLOBAL WARMING
. improved efficiantcy in renewable power
. pressure from other countries

Question 8

What are the two types off batterys called?

Answer 8

. rechargable
. alkahline

Question 9

What are some cons of rechargeable batterys?

Answer 9

. more expensive

Question 10

What are some pros of rechargeable batterys?

Answer 10

. more enviromntally freindly
. power output remains constant
. built into some computers
. reverse chemical reaction when elctrical current is passed through it.

Question 11

What are some negatives for alkahline batterys?

Answer 11

. not reusable
. power output gradually decreases with time

Question 12

What are some positives for alkahline batterys?

Answer 12

. recycable
. last a long time
. used for toys