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ENERGY
The Learners should be able to:
Learning Objectives
- Recall the sources,and uses of light energy
- describe sources of heat energy
- enumerate uses of heat energy
Review
?
Lesson
What causes the air balloon to rise into the sky?
HEAT ENERGY
What?
Heat
-The flow of energy between objects.
-It always flows from a warmer object to a cooler one.
SOURCES
SOURCES OF HEAT
- Natural
- Artificial
Heat Energy and how does heat affect matter?
What causes the particles to move?
-It's the energy that makes them move
THERMAL ENERGY
Note:
Hot object has a lot of thermal energy.
Cold object has much less thermal energy.
Temperature
- measure of how cold or hot something.
Thermometer
Expands
Contracts
How to control the flow of heat?
CONDUCTOR
- Black clothes
INSULATORS
Valuing
As a grade 4 students, How important is heat energy to be studied?
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