In order for a car to run it needs petrol. Petrol is fuel for the car. People are more complex than cars. For the human body to function it needs many different types of fuel in the form of food. The human body needs food for energy, to keep warm, and for growth and repair. We need many nutrients on a daily basis in order to stay healthy. The three main nutrient groups in food are carbohydrates, protein and fats. We also need minerals and vitamins. A good balanced diet of fresh food helps to keep us healthy.

This clip is from:
Science Clips, Keeping Healthy
First broadcast:
28 April 2009

This could be used prior to learning about the properties of the different food groups required by the human body to function correctly. It could be used to revise the main groups before sorting food types and discussing their purposes in a balanced healthy diet. The clip makes connections between food intake and energy output that could then lead to investigations into calorific values. The pupils could use a range of food packets carrying energy information to identify those highest in energy. They could then try to identify how the energy they consume is used during the day. They could create a chart of the sorts of fuels used to heat their homes and run their cars. They could then graph who uses food energy to get to school as against petrol energy.