1. The percentage of the human body that is made of water is …
a. … 40%. b. … 70%. c. … 80%. d. … 90%.
2. How much of the Earth’s surface does water cover?
a. 51% b. 61% c. 71% d. 81%
3. The chemical name for water is …
a. … HO2. b. … O2. c. … HO. d. … H2O.
4. Water can be changed into different states by changing its temperature. Name the three
forms it can exist in.
_________________________ _________________________ _________________________
5. Water is heavier than … (two are correct)
a. … stone. b. … wood. c. … plastic. d. … gold.
6. How much water do humans need to consume a day to live?
a. 0.5 litres b. 2 litres c. 3 litres d. 4 litres
7. We get a lot of water from food. What percentage of an egg is made up of water?
a. 50% b. 60% c. 75% d. 80%
8. Most fruit is how much water?
a. 50% b. 70% c. 80% d. 90%
9. People can live without food for two months. How long can they live without water?
a. 2 days b. 4 days c. 7 days d. 10 days
10. How much water do people in developed countries use each day?
a. 50 litres b. 100 litres c. 250 litres d. 300 litres
11. How much of the water we use each day is for drinking?
a. 1% b. 3% c. 5% d. 10%