07. Water pollution [G1 LSS]

Which statement is not an example of the importance of water?

• It causes floods in low-lying lands.

• It helps us to stay hydrated.

• It helps us transport substances in our circulatory system.

• It is used to produce medicine that is safe for consumption.

Answer explanation

While water can cause flooding, it is not an example of the importance of water i.e., why humans need water.

Which source of water is not one of the Four National Taps of Singapore?

• Desalinated water

• Imported water

• Botted mineral water

• NEWater

Answer explanation

Mineral water is natural water taken from water resources e.g., melted snow. This is not found in Singapore.

Educating the public on the importance of keeping waterways clean can reduce water pollution.

• True

• False

Answer explanation

Educating the public can make them more aware of the situation, and make them more mindful of how they throw away litter.

Planting more trees in our parks can help to reduce water pollution.

• True

• False

Answer explanation

Some trees e.g., mangrove trees, can help improve water quality, but most typical trees doe not affect water quality

Providing sufficient rubbish bins along waterways can help reduce water pollution.

• True

• False

Answer explanation

Providing enough rubbish bins encourages people to throw their rubbish there instead of waterways. If there are insufficient bins, people might not want to carry the rubbish with them, and throw them into the water instead.

Which of the following statements is false?

• Polluted water can be cleaned easily.

• Polluted water can make us sick.

• Singapore has limited natural water resources.

• Water is important to living things.

Answer explanation

Polluted water must be treated in several different ways (e.g., filtration, UV sterilisation), which is difficult and expensive to do.

_______ and rubber are examples of water pollutants that can be found in neighbourhoods and waterways.