Education Phase 2 Energy

Sources of energy

Energy Food is the body’s source of energy. Food and drink provide energy.

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.

100g of these foods provide different amounts of energy… 152 kJ 413 kJ 712 kJ 3059 kJ

Which food provides the least energy? 125 kJ 1194 kJ 562 kJ 595 kJ All foods per 100g.

Which food provides the most energy? 215 kJ 3059 kJ 1422 kJ 601 kJ All foods per 100g.

Different activities use different amounts of energy. Uses of energy Different activities use different amounts of energy. Which activity uses the most energy? cooking swimming walking football 85kJ/15 mins 357kJ/15mins 114kJ/15 mins 196 kJ/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

Portions Per 100g = 451 kJ Per slice of ham(23g) = 104 kJ Per matchbox size chunk of cheese(30g) = 518kJ