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Unit Pre-Test: Water

Total questions: 13

Worksheet time: 6mins

Name
Class
Date
1.
The chemical compound of water is
a)
HO
b)
H2O
c)
H3O
d)
HO2
2.

What is the hydrosphere?

a)

The water I drink at home

b)

The sum of the seas and oceans

c)

All the water on the Earth's surface, groundwater and vapour water

3.

The place where the river flows into the sea is called...

a)

Tributary

b)

Floodplains

c)

Source

d)

The mouth

4.
Why is water the most important substance on the planet?
a)
It Dilutes
b)
Drives Climate
c)
Sustains Life
d)
It's Pretty
5.
What amount of the earth's surface is covered with water?
a)
25%
b)
72%
c)
97%
d)
99%
6.
What amount of the water on the earth is salt water?
a)
25%
b)
72%
c)
97%
d)
99%
7.
What is the main reason why water is not desalinated?
a)
don't know how
b)
too expensive
c)
difficult to transport
d)
inaccessible
8.

Groundwater is...

a)

The water under the Earth's surface

b)

The water that forms the clouds

c)

The water of the swimming pool

9.
Agriculture uses what percentage of the water worldwide?
a)
15%
b)
40%
c)
65%
d)
90%
10.

Why do we need water in our bodies?

a)

To carry nutrients in the body

b)

To lubricate joins, digestive tract and body tissues

c)

To cool the body

d)

All of the answers

11.

Which of the following is the source of fresh water?

a)

(a) Seas

b)

(b) Oceans

c)

(c) Snow and ice

12.

What pollutes water?

a)

Factory Waste

b)

Plastics

c)

Leachate

d)

All of the answers.

13.

What do you think uses the most water in a household each day?

a)

drinking and cooking

b)

washing dishes

c)

bathing

d)

brushing your teeth

e)

toilets