Where does 99% of our energy come from?

1
Where does 99 of our energy come from?

1. The sun
2. Fossil fuels
3. Wood-burning
4. Nuclear power

2
What percentage of commercial energy in the U.S.
is renewable?

1. 20
2. 10
3. 8
4. 18

3
Net energy is

1. The amount of energy created by consuming one
   unit of an energy source
2. The usable amount of high quality energy
   available from a given quantity of a resource
3. The amount of energy available minus the amount
   used to obtain it
4. The amount of energy wasted in converting energy
   from raw form to usable form

4
On average, oil producers get only about _____
of the oil out of an oil deposit.

1. 20-30
2. 10-20
3. 35-50
4. 50-55

5
Which of the following products does not use
petrochemicals in its manufacturing?

1. Medicine
2. Plastics
3. Paint
4. Paper products

6
Who has the most reserves of coal?

1. Canada
2. Russia
3. China
4. The United States

7
What raw material is used to make synthetic
natural gas?

1. Petroleum
2. Coal
3. Biomass
4. Plastics

8
Water has three purposes in a nuclear reactor.
Which of the following is not one of those
purposes?

1. Produce steam for generating electricity
2. Cool fuel rods to prevent melting
3. Extract radioactivity from uranium ore
4. Storage of spent fuel

9
True or false? Nuclear power has a low net energy
yield.

1. True
2. False

10
Which type of nuclear reaction occurs in nuclear
power plants?

1. Fission
2. Fusion

11
True or false? We can use hydrogen, pulled
directly from the atmosphere, to produce
electricity.

1. True
2. False

12
The energy efficiency of a fluorescent light is
about _____ that of an incandescent light.

1. ten times
2. twenty times
3. twice
4. four times

13
About how much commercial energy used in the U.S.
is wasted?

1. 50
2. 32
3. 76
4. 84

14
The most energy-efficient house would

1. Use an oil furnace for space heating
2. Be lit by fluorescent lights
3. Have an electric hot water heater
4. Have many north-facing windows

15
True or false? Fuel efficiency of new passenger
cars is equal to or less than what it was in
1985.

1. True
2. False

16
A(n) _____ captures sunlight directly and
converts it into low temperature heat for space
heating.

1. Passive solar heating system
2. Active solar heating system
3. Solar thermal system
4. Earth tube

17
Photovoltaic (PV) cells use _____ to produce
electricity.

1. moving water
2. sunlight
3. natural gas
4. fuel cells

18
Hydroelectric dams

1. Improve reproduction of migrating fish
2. Have shorter life spans than coal or nuclear
   power plants
3. Help control flooding and supply water for
   irrigation
4. Are relatively inexpensive and easy to build

19
Wind power facilities

1. Supply about 18 percent of the world's
   electricity
2. Are economically feasible only in areas with
   steady winds
3. Require a moderate amount of water for operation
4. Are not feasible anywhere in the United States

20
Which energy source is cheaper and cleaner than
any other energy source?

1. Biomass
2. Solar power
3. Hydroelectric power
4. Wind power

21
Biomass energy

1. Supplies about 50 percent of the energy in
   developing countries
2. Is a potentially renewable source of energy
3. Is never expected to be a useful alternative to
   the use of oil
4. Is difficult to produce efficiently

22
Which of the following is a depletable source of
geothermal energy?

1. Underground reservoirs of dry steam
2. Molten rock
3. Hot dry-rock zones
4. Aquifers

23
Which of the following technologies is considered
a very important part of future energy production?

1. Tidal power
2. Hydrogen power
3. Electric cars
4. Thermal saline ponds