Education
Phase 2
Energy
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Sources of energy
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Energy
Food is the body’s source of energy.
Food and drink provide energy.
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Energy
We need energy to grow, be active
and maintain health.
Different types of food provide
different amounts of energy.
Energy is measured in kilojoules – kJ.
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100g of these foods provide
different amounts of energy…
152 kJ
413 kJ
712 kJ
3059 kJ
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Which food provides the least energy?
125 kJ
All foods per 100g.
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1194 kJ
562 kJ
595 kJ
Which food provides the most energy?
215 kJ
All foods per 100g.
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3059 kJ
1422 kJ
601 kJ
Uses of energy
Different activities use different amounts of
energy.
Which activity uses the most energy?
swimming
357kJ/15mins
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walking
114kJ/15 mins
football
196 kJ/15 mins
cooking
85kJ/15 mins
Portions
Different amounts of food provide different amounts of
energy.
The amount of food is known as a portion.
We eat different amounts of different types of food.
Per 100g = 922 kJ
Per slice (36g) = 318 kJ
Per 100g = 152 kJ
Per small orange
(120g) = 182 kJ
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Portions
Per 100g = 451 kJ
Per slice of ham(23g) =
104 kJ
Per 100g = 1725 kJ
Per matchbox size chunk of
cheese(30g) = 518kJ
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