Copyright © 2008 McGraw-Hill Australia CONQUERINGCHEMISTRY PRELIM MODULE 3 WS 2

WORKSHEET2WATER ON EARTH

Syllabus reference 8.4.1

1 Classify each of the following statements as true or false. For the statements that are false rewrite them so they are true.

a Most of the water on Earth is found in the oceans.

b The atmosphere does not contain any water because it is made up of gases.

c Water is the only substance which exists naturally in three states simultaneously.

d Water contracts (gets smaller) when it freezes.

e More things can be dissolved in oil than in water.

f Condensation is water coming out of the air.

g A solution is made up of a solute and a solvent.

h The substance which dissolves is called the solvent.

i All living things need water to survive.

j Water bodies show greater temperature fluctuations than land or air.

MODULE 3

Copyright © 2008 McGraw-Hill Australia CONQUERINGCHEMISTRY PRELIM MODULE 3 WS 2

2 Complete the following table comparing the state, percentage and distribution of water on Earth.

3 List three processes in which water plays a major role in living things.

4 Give one advantage of water as a habitat compared with land.

5 What role does water play in changing the surface of the Earth?

6 Apart from drinking and washing, list four ways in which humans use water.

ZONE OF THE EARTH

Atmosphere

Biosphere (living matter)

STATE (SOLID, LQUID, GAS)

Liquid as ground water

% OF THE ZONE

>95% in oceans Also in polar icecaps, lakes and rivers