Page 30 - Science and Technology Std 3
P. 30
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Heat energy
Heat is a form of energy. Heat energy can pass through solids,
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liquids and gases. For example, heat travels in iron, water and
air. This shows that solids, liquids and gases can transfer heat.
Look at the following pictures to study different sources of heat.
a Wood burning stove b Electric stove
c Charcoal stove d Gas stove e Sun
Figure 5 Sources of heat energy
Heat energy can be produced by various sources. These include
wood burning stoves, electric stoves, charcoal stoves and gas
stoves. It can also be produced by the sun. The sun is one of
the natural sources of heat.
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PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Science and Technology 3.indd 23 03/08/2019 11:01
