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CLASS -7 - CH - 16 - WQTER

Total questions: 20

Worksheet time: 7mins

Name
Class
Date
1.

WHEN IS THE WORLD WATER DAY CELEBRATED

a)

22 JUNE

b)

31 DECEMBER

c)

21 MARCH

d)

22 MARCH

2.

WHICH YEAR WAS OBSERVED AS INTERNATIONAL YEAR OF FRESHWATER

a)

2008

b)

2015

c)

2018

d)

2003

3.

THE PROCESS OF SEEPING OF WATER INTO GROUND IS CALLED

a)

INFILTRATION

b)

DRIP IRRIGATION

c)

WATER HARVESTING

d)

NONE OF THE ABOVE

4.

Water pollution and waste plays a big factor in water shortage.

a)

True

b)

False

5.

What is the process that brings water to the farm areas where farmers do not have access to water?

a)

An extra long soaker hose

b)

hydroelectric power

c)

irrigation

d)

desalination

6.

What is the process that electricity is produced from energy of running water?

a)

desalination

b)

hydroelectric power

c)

irrigation

d)

windmills

7.

Why is fresh water a limited resource?

a)

It isn't because it is a renewable resource

b)

97% of water is in the oceans and too salty to drink.

c)

Only 2.5% is drinkable and is stored in icecaps, rivers, and lakes.

8.
Where 97% of Earth's water is stored?
a)
Glaciers
b)
pH
c)
Groundwater
d)
Sea water
9.

What is it called when creeks and smaller rivers join together to make a larger river?

a)

River Systems

b)

Topography

c)

Watershed

d)

Groundwater

10.
What is a stream or river that feeds into a larger body of water?
a)
Tributary
b)
Estuary
c)
Bay
d)
Watershed
11.
Snow, sleet, hail, and rain are all examples of  ________________. 
a)
evaporation
b)
condensation
c)
accumulation
d)
precipitation
12.
The water cycle has...
a)
a beginning and an end. 
b)
no beginning and no end. 
c)
only a beginning. 
d)
only an end. 
13.
Evaporation occurs when water changes into ________.
a)
transpiration
b)
snow
c)
solid
d)
vapor
14.
Which of the following is the reason why ice can float?
a)
The air bubbles in the frozen water make it rise.
b)
The water molecules in ice are closer together and more dense than liquid water.
c)
When water molecules expand, they take up more space and are less dense.
d)
All frozen things will float in liquid water.
15.
Water is made up of these two colorless, odorless gases.
a)
Helium and Oxygen
b)
Oxygen and Carbon Dioxide
c)
Hydrogen and Helium
d)
Hydrogen and Oxygen
16.
What percent of Earth's water is the oceans?
a)
70%
b)
85%
c)
90%
d)
97%
17.
What percent is Earth's water is found in glaciers?
a)
2%
b)
10%
c)
6%
d)
25%
18.
The molecular formula for water is
a)
W
b)
H2O
c)
2HO
d)
H2O
19.

When conserving water, the 3Rs we need to remember are:

a)

Remove, Reuse, Recycle

b)

Report, Remove, Reduce

c)

Reduce, Reuse, Recycle

d)

Reduce, Reuse, Rethink

20.

At what temperature does water Freeze?

a)

0o C

b)

100o C

c)

32o C

d)

-273o C

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