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1. Complete
the following sentences using some
of the words in the box:
sun water
food kinetic work soil electricity
a)
Without
energy nothing would __________.
b)
Our
bodies get their energy from ________.
c)
Plants
get their energy from the _________.
d) Most of the energy on Earth comes from the _________.
2. What
forms of energy are involved in the following :
a)
A
moving ball. _______________
b)
A
loud sound. _______________
c)
A
wind blowing. _______________
d)
A
lump of coal. _______________
e)
A
cheese sandwich. _______________
f)
A
rock at the top of a mountain. _______________
g)
A
parked car full of petrol. _______________
3.
a) How can we make the dynamo produce electricity ? ________________________________
b) The dynamo converts ________________
energy into ______________ energy.
6.
a)
The
fuel is burnt so the ______________
energy in the fuel is converted into _________ energy.
b)
The
water in the steam engine gets very hot and becomes steam. The steam pushes the
piston and makes it move so the heat energy has been converted to ___________
energy.
c)
The
piston makes the dynamo turn, the dynamo converts
__________ energy into electrical energy.
5.
a)
A
calculator with a solar cell does not need batteries because the solar cell
converts ______________ energy into ________________ energy.
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8. A
car is filled up with petrol, the car is driven for a
week and then has to be refilled with petrol. If energy is always conserved,
explain why the car has to be refilled with petrol.
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