Providing safe drinking water (non-statutory Climate Change & Sustainability) | Science

Starter quiz

Which of these describes natural materials?
- Natural materials have been made by humans.
- Natural materials have not been made by humans. ✓
- Natural materials have come from lots of different nations, or countries.
Which of these is not a natural material?
- wood
- sand
- plastic ✓
- gravel
- soil
What do we call a solid that dissolves in a liquid?
- soluble ✓
- dissolvable
- insoluble
What do we call a solid that does not dissolve in a liquid?
- soluble
- unsoluble
- insoluble ✓
- desoluble
What is the name of this piece of equipment?
- funnel
- sieve ✓
- filter paper
Filter paper can be used to separate ______ solids from liquids.
- soluble
- insoluble ✓
- dissolved

Exit quiz

Which of the following is one of the world’s largest health and environmental problems?
- unsafe swimming areas
- unsafe drinking water ✓
- unsafe electrical devices
- unsafe noise levels
Which group of people are most likely to suffer from unsafe drinking water?
- the poorest ✓
- the tallest
- the richest
- the loudest
- the thirstiest
What percentage of the world’s population have access to safe drinking water at home?
- around 40%
- around 80% ✓
- around 20%
- around 90%
Approximately how many people in the world do not have access to safe drinking water at home?
- 160
- 16 000
- 16 million
- 1.6 billion ✓
Why must microorganisms be removed from water to make it safe to drink?
- Microorganisms will drink the water.
- Microorganisms can make people ill. ✓
- Microorganisms can become ill in water so they need protecting.
Which of these is a step in the processes used to make water safe for drinking?
- freezing
- filtering ✓
- dissolving
- melting

Worksheet

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Presentation

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Lesson Details

Key learning points

Around 80% of the world's population have access to safe drinking water at home, leaving 1.6 billion without.
Unsafe water is one of the world’s largest health and environmental problems, particularly for the poorest in the world.
Scientists and engineers take inspiration from nature to create filtering systems to clean water for drinking.

Common misconception

Children may think that everyone has access to safe drinking water, and that water just 'appears' clean from a tap.

This lesson explains how approximately 1.6 billion people in the world today do not have access to water that is safe to drink. Also, that water is usually filtered and treated to make it safe to drink.

Keywords

Access - To have access is the ability to enter or use something.
Microorganism - A microorganism is a very tiny living thing.
Filter - To filter is to separate the solid particles in a liquid using filter paper or a fine mesh.
Natural - A natural object or material has not been made by humans.