Page 101 - Viva ICSE Science 5 : E-book
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Types of energy
There are diff erent forms of energy. Let’s discuss some of them.
Mechanical energy
The energy possessed by an object due to its position
or motion is called mechanical energy. It is of two
types—potential energy and kinetic energy.
The energy possessed by a body due to its position is
called potential energy. It is the stored energy of an
object. For example, a stone kept on top of a building
has potential energy, if it falls the potential energy is
converted into kinetic energy.
The energy possessed by a body due to its motion is known as kinetic energy. For
example, a moving ball, fl owing water, etc. have kinetic energy.
Heat energy
The energy which is responsible for the sensation of
heat is known as heat energy. We get heat energy from
the sun and also by burning various fuels like wood
and coal. This energy is useful in cooking, running
steam engine and generating electricity.
ACTIVITY TIME
To show that heat is a form of energy
You Need:
A matchbox, a candle, a piece of paper, a pair of tongs
What to Do:
• Place the candle on a table.
• Light the candle using the matchstick.
• Now using the tongs, hold the paper above the fl ame of the candle.
The paper burns. Thus, we can say that heat is a form of energy due to which the paper gets
burnt.
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