learning objectives: to describe how the body uses energy to explain what is meant by respiration...

DO I HAVE ENOUGH ENERGY

Learning Objectives:

•To describe how the body uses energy

•To explain what is meant by respiration

•Analyse the energy requirements of different people

Starter:

The next slide has different athletes – you need to rank

them from which you think burns the most calories to the least

Results

•Football – 612 per hour•Darts – 170 per hour•Boxing - 816 per hour•Golf – 306 per hour•Netball – 506 per hour•Gymnastics – 272 per hour•Basketball – 544 per hour•Horse Riding – 272 per hour

Using Energy

Where do we get our energy from?

When you are walking on a cold day what is some of the energy in your body

being used for?

When you are sleeping what is some of the energy used for?

Food labels

•Energy is measured in units known as kilojoules (kJ).

•Energy is also measured in calories (kcal).

•1 calorie = 4.2 kJ

Energy and nutrients

Food and drinks provide us with different amounts of energy because of the variety of nutrients they contain.

1g protein provides 17kJ (4 kcal).

1g carbohydrate provides 16kJ (3.75 kcal).

1g fat provides 37kJ (9 kcal).

Activity

Look at your food labels. In groups discuss:

oHOW MUCH ENERGY IS IN EACH ONE?

oHOW MUCH SUGAR (CARBOHYDRATES) AND FAT IS IN IT?

oWHAT TIME OF THE DAY SHOULD YOU EAT THIS FOOD?

oDO YOU THINK YOU WOULD HAVE TO DO MUCH EXERCISE AFTER EATING THIS FOOD?

Check Point

Learning Objectives:

•To describe how the body uses energy

•To explain what is meant by respiration

•Analyse the energy requirements of different people

HSW – Task

Look at Page: 14 – Discuss with your row the three questions about energy

with Age!

higher – reach up lower – touch your toes

Stand up!

Check Point

Learning Objectives:

•To describe how the body uses energy

•To explain what is meant by respiration

•Analyse the energy requirements of different people

from the digestive system

from the breathing

system

useful!waste product exhaled

waste product exhaled

This type of respiration is called aerobic respiration because energy is released with oxygen.

Respiration is the process that the body uses to release energy from digested food (glucose):

What is respiration?

carbondioxideglucose oxygen water energy

How do the glucose and oxygen needed for aerobic respiration get to the all the body’s cells?

Aerobic respiration: word equation activity

Respiration

Worksheet

Check Point

Learning Objectives:

•To describe how the body uses energy

•To explain what is meant by respiration

•Analyse the energy requirements of different people