1.
What is energy?
2.
What sector of our society consumes the most energy?
a.
transport b.
commerce c. residential d. industry
3.
Can you name the two main forms of energy?
4.
Can energy be created or destroyed?
a.
Yes b. No
5.
Most energy conversions produce …
a.
motion b. sound c. heat d.
light
6.
Where does all our energy in the world come from?
a.
food b. sun c. fossil
fuels d. inside
the earth
7.
What produces the sun’s energy?
8.
What does “photo “ mean in
words like photosynthesis, photovoltaic and photograph?
a.
light b. picture c. energy d.
colour
9.
What happens when light hits a surface?
a.
reflected b.
absorbed c. both reflected and absorbed
10.
How do plants get their energy?
11.
Where did the energy of your body ultimately come from?
12.
Electricity consumption is measured in ...
a.
amperes b. volts c. kilowatt-hours
d. watts
13.
The kilowatt is equal to...
a.
10 watts b. 100 watts c. 1000 watts d. one million watts
14.
What is electricity?
15.
How do most Indian electricity power plants get their energy?
a.
water b. electricity c. fossil fuels d. wind
16.
Where does coal come from?
17.
What are the advantages of using coal for electricity production?
a.
India has large reserves of coal b.
low cost of fuel produces cheap
electricity
c.
electricity can be produced when needed d.
all of these
18.
What are the disadvantages of using coal?
19.
The energy in fossil fuels such as coal is stored as...
a.
chemical energy b.
electrical energy c.
thermal energy d.
nuclear energy
20.
What does renewable energy mean?
21.
What sort of renewable energy electricity is available in India?
a.
coal b. nuclear c.
wind, solar, hydro and bioenergy d.
all of these
22.
What types of energy can solar panels utilise?
a.
heat and light b.
chemical c. wind d. mechanical
23.
What are solar panels that produce electricity called?
24.
What is the greenhouse effect?
25.
Which type of electricity consumption uses the most energy?
a.
lighting b. heating water c. heating and cooling rooms d. refrigeration
26.
What are three things you need to help heat your house with the Sun in the
winter but keep it cool in the summer?
27.
What can we do to reduce the greenhouse effect?
28.
Compared to incandescent light bulbs, fluorescent bulbs
a.
use more energy b.
use less energy c.
use the same amount of energy
d.
make people want to use more electricity
Answers
1.
Energy is needed to do “work”. It is
needed for any physical movement, to make devices such as appliances and cars
function, to keep the house warm, to cook food, etc.
2.
d. Industry
3.
Potential Energy is stored energy and
Kinetic Energy is energy of movement. A rolling ball has “kinetic” or moving energy.
A ball sitting on the table has “potential” or stored energy.
4.
b. No
5.
c. heat
6.
b. sun
7.
The sun is immensely hot and dense which
causes the atoms in its gases to undergo nuclear fusions. The fusion of
hydrogen molecules to form helium molecules releases huge amounts of thermal
and radiant energy.
8.
a. light
9.
c. both reflected and absorbed
10.
From the sun’s light energy through the
process of photosynthesis.
11.
From the chemical energy in our food which
has been passed through the food web from plants and the sun’s light energy.
12.
c. kilowatt-hours
13.
c. 1000 watts
14.
Moving electrons
15.
c. fossil fuels
16.
Ancient plants and animals which were
buried and underwent changes over millions of years to form fossil fuels.
17.
d. all of these
18.
Coal as a fossil fuel will not last
forever. Burning coal produces pollutants which cause acid rain. Burning coal produces
carbon dioxide and other greenhouse gases which are contributing to global
warming.
19.
a. chemical energy
20.
Any source of energy that doesn’t consume
the finite resources of the Earth and can be easily and quickly replenished.
Includes Solar, Wind, Hydro and Bio energy.
21.
c. wind, solar, hydro and bio energy
22.
a. heat and light
23.
Photovoltaic arrays
24.
It is the accumulation of gases such as
carbon dioxide in our atmosphere, which stops the sun’s heat escaping out into
space.
25.
c. heating and cooling rooms
26.
Insulation, deciduous shade trees, correct
orientation, verandas and other shade structures, curtains.
27.
Use less electricity. Use energy sources
which don’t release greenhouse gases to make electricity.
28. b. use less energy
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