Living in our Environment unit Crossword
Name_____________________________________
Across
2. technologies that can be used to convert
sunlight into usable heat without the use of
much or any electrical or mechanical
equipment.
4. an underground tank where animal and
food waste is digested by bacteria to
produce methane that can be used as a fuel
for cooking.
7. CH3CH2OH, Can be used as a fuel in
cars, either mixed with gasoline, or alone.
Produced by fermenting plant matter such
as corn, sugar cane or sugar beets.
8. a machine that converts the wind's kinetic
energy into rotary mechanical energy, which
is then used to do work. the rotational
energy is converted into electricity by using
a generator.
13. a fuel formed in an ocean environment
when plankton and other organism die and
fall to the bottom. Over millions of years the
accumulations are covered with sediments
and with heat a pressure are converted to
_____.
16. -A mixture of methane and carbon
dioxide produced by bacterial degradation of
organic matter and used as a fuel.
17. any dried plant matter or animal waste
that can be burned for energy. Can actually
be burnt to heat water and to drive turbines.
18. Generating electricity by conversion of
the energy of running water usually
involving a dam.
19.Capable of being continued with minimal
long-term effect on the environment.
20. a source of energy that is in limited
supply and irreplaceable.
21. - In statistics, a measure of the strength
of the relationship between two variables. It
is used to predict the value of one variable
given the value of the other. However,
correlation is not the same as causation,
and even a very close correlation may be no
more than a coincidence.
Down
1. materials of biologic origin (dead plants and animals) occurring within the Earth's crust that can be used as a source of energy.
3. Any of various renewable power sources to use in place of fossil fuels.
5. -“hydro” meaning water and “thermal” meaning heat. Hydrothermal solutions, from which so many minerals are deposited, are solutions of hot water
escaping from subterranean sources, possibly of molten rock. Hydrothermal solutions may be used to generate electricity using steam turbines.
6. a fuel formed from decaying plant matter or oil that has been exposed to heat and pressure and is often found with oil deposits. Mostly Methane (CH4)
with a mixture of other gasses such as ethane, butane and propane.
9. a metaphor used to depict the amount of land and water area a human population would hypothetically need to provide the resources required to support
itself and to absorb its wastes, given prevailing technology.
10. alcohol made from cellulose, long complex fibers found in plants. The cellulose is broken down into simple sugars which can be fermented to make
ethanol. Can be made using sawdust, paper pulp waste, switch grass, and agricultural feed waste, like corn stalks.
11. energy derived from resources that are capable of being regenerated or for all practical purposes can not be depleted
12. a fuel formed from 300 million years old plant matter. Plants died and fell into swamps and bogs. Under these conditions the plant mater was not allowed
to decay and under water due to lack of oxygen, after millions of years of matter building up on top of it pressure compressed the plant mater into ____.
14. The process of converting light directly into electricity using specially designed silicon cells.
15. technologies that can be employed to convert sunlight into usable heat which use electrical or mechanical equipment, such as pumps and fans
17. -fuel made from natural, renewable sources, such as new and used vegetable oils and animal fats, for use in a diesel engine. Fresh soybean oil is most
commonly used, although biodiesel can be made from mustard seed oil or waste vegetable oil (such as used oil from restaurant deep fryers).