Uses of water 4.2 - 4.3

How does water support river ecosystems?

• By providing regular water supply for aquatic plants and animals to take in

• By providing regular water supply for plants in the ecosystem to obtain energy through photosynthesis

• By providing habitat for the aquatic plants and animals to live in

• By providing energy for humans through fish as a source of food

What is the largest use of water worldwide?

• Recreational purposes

• Industrial purposes

• Domestic purposes

• Agricultural purposes

What is the main purpose of using water in agriculture?

• To carry out recreational activities

• To grow crops and rear animals

• To generate electricity in power plants

• To cool equipment in factories

What are some ways of using water for domestic activities?

• To shower

• To generate electricity in power plants

• To grow crops and rear animals

• To perform household tasks like bathing and cooking

Sailing is a domestic use of water.

• True

• False

What is/are the use(s) of water in industries?

• To produce raw materials for products

• To cool equipment in factories

• To generate electricity in power plants

• To grow crops and rear animals

Why is there a need to cool equipment in industries?

• So that the equipment can continue operating

• So that the equipment does not spoil

• So that the equipment does not overheat

• So that there is enough water to manufacture items

Why does agriculture require a large amount of water?

• Machinery is required to produce food

• World populations are increasing and more food needs to be grown

• There is insufficient rain and irrigation has to be used

• Gardening activities are increasing

How many litres of water are required to manufacture a car?

• 368420 litres

• 3420 litres

• 378420 litres

• 3720 litres

Water is used to generate ________________ when water passes through turbines installed in dams.

• electricity
• waste
• water
• resources