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Food 01
Cucumbers contain little or no carbohydrates.

Food 01

Food provides the energy and nutrients our bodies need to live and grow. In KS3 Science, pupils explore balanced diets, food groups, and the importance of nutrition.

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Fascinating Fact:

Carrots do not really help you see in the dark, that was a World War II myth to cover up the use of radar.

In KS3 Science, pupils study food and nutrition to understand how different food groups support the body. Learning about energy, vitamins, and minerals helps explain why balance is important.

  • Nutrients: Substances in food that help the body grow, repair, and stay healthy.
  • Balanced Diet: Eating the right amount of different foods to provide all essential nutrients.
  • Energy: The fuel from food that powers body processes like movement, growth, and repair.
What are the main food groups in KS3 Science?

The main food groups are carbohydrates, proteins, fats, vitamins, minerals, fibre, and water, each with different roles in keeping the body healthy.

Why is a balanced diet important?

A balanced diet is important because it provides the right mix of nutrients, helping the body grow, repair tissues, and stay strong against illness.

Do carrots really help you see in the dark?

Carrots contain vitamin A, which supports healthy eyesight, but they do not make you see in the dark. The idea was a World War II myth.

1 .
What are proteins used for?
Bones and teeth
Energy
Growth and repair
Healthy blood
Proteins are long chains of different amino acids
2 .
What are carbohydrates used for?
Bones and teeth
Energy
Growth and repair
Healthy blood
They provide energy through respiration
3 .
What are fats in our diet mainly used for?
Bones and teeth
Growth and repair
Healthy blood
Stored energy
As well as stored energy, they provide insulation
4 .
What are small amounts of vitamins needed for?
Bones and teeth
Chemical reactions in the body
Digestion
Respiration only
If your chemical reactions don't work properly all sorts of things can start to go wrong with your body
5 .
Iron, a mineral, is needed for what?
Bones and teeth
Cell chemistry
Energy
Healthy blood
Calcium, also a mineral, is needed for bones and teeth
6 .
Fibre is needed for what?
Cell chemistry
Energy
Healthy blood
Preventing constipation
It also helps prevent bowel cancer
7 .
Which of the following foods contain little or no protein?
Beans
Butter
Fish
Meat
Butter contains mainly fat
8 .
Which of the following foods contain little or no carbohydrates?
Bread
Cucumber
Pasta
Potatoes
A cucumber is a good source of vitamins and minerals
9 .
Which of the following foods contain little or no fibre?
Apples
Carrots
Cheese
Peas
Fresh fruit and vegetables contain vitamins and fibre
10 .
Which of the following contains most calcium?
Cheddar cheese
Green vegetables
Meat
Oranges
Milk-based products are a good source of calcium
You can find more about this topic by visiting BBC Bitesize - Nutrition, digestion and excretion

Author:  Sue Davison (Chemistry Specialist & KS3 Science Teacher, Quiz Writer)

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