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WorksheetsSafer energy
Total questions: 23
Worksheet time: 16mins
How Many like to save energy
25%
50%
75%
100%
Draw what comes to mind when saving energey
Energy saved is energy What?
(a)
Advantages of Nuclear power include:
Creates a lot of energy
Safer than coal (in the U.S.)
Involves harmful radioactive elements
Produces radioactive waste that must be stored
Disadvantages of Nuclear power include:
Creates a lot of energy
Safer than coal (in the U.S.)
Involves harmful radioactive elements
Produces radioactive waste that must be stored
Where does fission take place?
sun
stars
deep inside the earth
nuclear reactors
Fusion:
Splitting of radioactive elements into lighter elements
Combining of small elements into heavier elements
Creates a LOT of energy
Requires temperatures over 100 million degrees Celsius
Which uses the most energy in American homes each year?
lighting
water heating
heating and cooling rooms
refrigeration
Propane is used instead of natural gas on many farms and in rural areas. Why is propane often used instead of natural gas?
it's safer
it's portable
it's cleaner
it's cheaper
The US consumes lots of energy. Which fuel provides the most energy?
petroleum
coal
natural gas
solar
Global warming focuses on an increase in the level of which gas in the atmosphere?
ozone
sulfur dioxide
carbon dioxide
nitrous oxide
How much of the energy in burning coal reaches the consumer as electricity?
1/3 (one-third)
1/2 (one-half)
3/4 (three-quarters)
9/10 (nine-tenths)
Today, which renewable energy source provides the US with the most energy?
wind
solar
geothermal
hydropower
Zone I only
Zones I and II only
Zone III only
Zones I, II, and III
Most of the energy we use originally came from
the sun
the air
the soil
the oceans
What sentence best describes how energy flows through this pyramid?
Energy is transferred down each level of the energy pyramid.
The energy lost at each level is consumed by organisms in the top level.
Energy is transferred from organisms in one level to those in the level above.
The organisms at the bottom level provide energy directly to organisms in all the other levels.
Coal, petroleum, natural gas, and propane are fossil fuel. They are called fossil fuels because:
they are burned to release energy and they cause air pollution
they were formed from the buried remains of plants and tiny animals that lived hundreds of millions of years ago
they are nonrenewable and will run out
they are mixed with fossils to provide energy
Gasoline is produced by refining which fossil fuel?
natural gas
coal
petroleum
propane
Electrical energy can be produced from
mechanical energy
chemical energy
radiant energy
all of the above
What sector of the US economy consumes most of the nation's petroleum?
residential
commercial
industrial
transportation
How many organisms in this food web eat only producers?
3
2
1
4
How many predators in this food web are omnivores?
1
2
3
4
