chapter 6 energy resources

Question 1

non-renewable energy resources

Answer 1

gas, coal, oil
advantages:
-reliable
-releases a great deal of energy
-abundant
-cheap
-versatile
disadvantages:
-releases harmful greenhouse gases
-non-renewable

Question 2

wind power

Answer 2

each turbine has a generator inside of it, the rotating blades turn the generator and produce electricity

Question 3

wind power advantages and disadvantages

Answer 3

advantages:
-renewable
-doesn’t release harmful greenhouse gases
disadvantages:
-very noisy
-unreliable
-spoils the view
-initial costs are high

Question 4

solar cells

Answer 4

generate electric currents directly from sunlight, often in remote places

Question 5

solar cells advantages and disadvantages

Answer 5

advantages:
-no pollution
-reliable
disadvantages:
-initial costs are high
cant increase power output

Question 6

geothermal power

Answer 6

-the slow decay of radioactive elements, such as uranium
-possible in volcanic areas, or where rocks lie near the surface

Question 7

geothermal power advantages and disadvantages

Answer 7

advantages:
-reliable
-little damage to environment
disadvantages:
-aren’t many suitable locations
-high building costs

Question 8

hydroelectric power

Answer 8

-requires the flooding of a valley by building a big dam

Question 9

hydroelectric power advantages and disadvantages

Answer 9

advantages:
-immediate response, for an increased demand of electricity
-reliable
-no fuel costs, minimal running costs
disadvantages:
-initial costs are high