1. 14 / Tuesday
Kaupapa:
Investigate the amount of chemical potential energy in different foods
Discuss the energy needs of humans

2. Do you remember? What is the unit for Energy?
Name three active forms of energy
Name three potential forms of energy
Why do we eat?

3. What type of energy is this?

5. A slice of pepperoni pizza A large cookie (Cookie Time) A cup of milk
Which of these has the most amount of energy?
A banana
A slice of pepperoni pizza
A large cookie (Cookie Time)
A cup of milk
A slice of bread
A BigMac burger from McDonalds
A scoop of chips from Fish n’ Chips

7. Question:
How much energy do we need per day?

8. Energy Needs per day Age Male Female 0 – 1 years 4000 kJ 2 – 6 years
Adult (light work)
11000 kJ
9400 kJ
Adult (heavy work)
12500 kJ

9. Guess how much energy there is in…
Breakfast – one boiled egg, two slices of toast with butter, one cup of milk
Snacks – two glasses of lemonade, two chocolate biscuits, one muesli bar
Lunch – one cup of apple juice, one steak & cheese pie, one banana
Dinner – two boiled potatoes, one serving of steamed vegetables, one serving of roast chicken, one serving of instant pudding with tinned peaches
Supper – one cup of Milo and a large cookie

10. Energy needs of Humans
Different people need different amounts of energy (depending on age, gender, etc.)
Different foods provide different amounts of energy (fatty and sugary foods can contain LOTS of energy).

11. Question:
What would happen if you consume too much energy?

12. Epic Meal Time

13. Question:
What is the best way of controlling weight?

15. Controlling Weight
If more energy (from food) is taken in than what is used, a person gains weight and vice versa.
The best ways to control weight is to eat healthy and exercise – which increases the amount of energy used.

16. What would be the worst way to lose weight? Why?
Question:
What would be the worst way to lose weight?
Why?

17. Question:
Why is it easier for men to lose weight than women?
Why is it easier for a bigger person to lose weight?

18. Question:
How can we find out how much energy there is in the food we eat?

19. Nutrition Information

20. J? KJ? Cal? Kcal?

21. “Per Serving”

22. What have we learnt today?
What kind of energy is present in food?
What happens if too much food energy is taken in?
What is the best way to control weight?