The difference in the starting and end temperature of a substance.

An average of several measurements, which is calculated by adding them up and dividing by the number of measurements.

A variable is anything that can change or be changed in an investigation.

Energy provided by food: practical

Science

Good and ill health

Balanced diet

Food is a source of building materials and energy

Imbalanced diet: starvation and deficiency diseases

Imbalanced diet: obesity

The effects of exercise on the human body

The effects of exercise on breathing and heart rate

Recovery time after exercise

Pupils will learn about infectious and non-infectious diseases and the impact of recreational drugs.

Pupils learned to recognise the impact of diet, exercise, drugs and lifestyle on the way their bodies function.

This unit covers the components of a healthy diet, energy requirements, and the effects of imbalances, exercise, asthma, and smoking on the body. It also focuses on planning scientific enquiries, applying mathematical concepts, performing calculations, and basic data analysis techniques.

Diet and exercise

Physical activity and equipment requiring safe use

**Sam:** A mean is an average calculated from repeated measurements.

**Laura:** A mean is where you take the best result and use this as your answer.

**Izzy:** A mean is the highest result that you get.

**Jun:** A mean is calculated from a single measurement.

The amount of energy provided by different foods can be investigated and compared by {{}} them.

final temperature − initial temperature

initial temperature − final temperature

mass of water × temperature change × 4.2

mass of water × temperature change ÷ 4.2

Which is the correct equation for calculating the amount of energy provided by food?

Calculate the energy provided by burning food that heated water with a mass of 10 g and caused a temperature change of 23 °C.

Which food groups provide us with energy?

How much energy (kcal) is in 100g of this cereal?

How much energy (kcal) is in a 30g portion of this cereal?

The apparatus we use to heat things in the lab in called a {{}} burner.

What pieces of information must be included on a food label by law?

Starter Quiz