Water

Q. The process of conversion of water vapour into water is called _________.

1. condensation
2. precipitation
3. photosynthesis
4. evaporation

Q. The process of turning water into water vapour is called ________.

1. condensation
2. precipitation
3. evaporation
4. photosynthesis

Q. Which of the following process is not a part of water cycle?

1. Sedimentation
2. Precipitation
3. Transpiration
4. Condensation

Q.

Earth is called the blue planet because 71% of the Earth's surface is covered with water, but we still face and hear stories about water shortage. What can be the possible reason for this?

1. Ocean water cannot be used on land

2. Most of the available water is salty and unfit for consumption

3. Ocean water is full of disease-causing microbes

4. Ocean water is available only in coastal areas

Q. We can change the state of water by heating or cooling.

1. True
2. False

Q.

Your grandmother gives you lot of mangoes and asked you not to eat all alone but also to distribute it to your siblings and cousins. With every person, the number of mangoes you have is decreasing and ultimately you are left with no mangoes.

Your grandmother told you that the result is same for natural resources too. She is right because?

1. Natural resources will be depleted with coming generation

2. Natural resources will never deplete.

3. Natural resources were very scarcely available in early days.

4. Your grandmother is wrong

Q.

Write an essay on "Save water, save life"

Q. Earth's surface has ____ percent of fresh water and ______ percent of saline water.

1. 2.5 to 2.75, 97

2. 71, 29

3. 97, 3
4. 50, 50

Q.

Is water conservation necessary? Give reasons.

Q. The process in which water is released from the clouds in the form of rain, snow, or hail is called __________.

1. condensation
2. precipitation
3. photosynthesis
4. evaporation

Q. Which of the following source of water contain saline water?

1. Groundwater
2. Lake
3. Sea
4. River

Q. Around ______ of earth's surface is covered with water.

1. 50%
2. 25%
3. 90%
4. 71%

Q. What is the percentage of freshwater available on the earth?

1. 70%
2. 45%
3. 1%
4. 5%

Q.

Pollution is the contamination of the environment.

1. True
2. False

Q.

Mention the forces of nature which affect the formation of soil.

Q. Natural resources can be used forever, as nature will keep on forming them repeatedly.

1. False
2. True

Q.

Name two sources of freshwater. [1 MARK]

Q.

Ice is the solid state of which liquid?

Q. Which of the following is not a property of water?

1. Colourful
2. Colourless
3. Odourless
4. Tasteless

Q.

State whether the following statements are True or False. If false, write the correct statement.

The rapid growth of industries is one of the causes of water shortage.

1. True
2. False

Q.

What causes drought and famine?

Q. At which of the following temperatures water will exist in the form of ice?

1. 1${}^o$C
2. 10${}^o$C
3. -5${}^o$C
4. 100${}^o$C

Q. Glaciers and ice sheets present on poles of earth contain the solid form of water.

1. True

2. False

Q. Identify the process which is not involved in water cycle.

1. Evaporation
2. Condensation
3. Photosynthesis
4. Precipitation

Q. Identify the correct order of purity for the given water sources.

1. Rainwater > Well water > Lake water
2. Well water > Lake water > Rain water
3. Lake water < Well water < Rainwater
4. Well water < Lake water < Rainwater

Q. 96% of the earth's water is present in ________.

1. rivers
2. oceans
3. lakes
4. seas

Q.

Earth's surface has _____ percentage of fresh water and _____ percentage of saline water.

1. 2.5, 97

2. 71, 29

3. 97, 3

4. 50, 50

Q.

I. Write the composition of air.

II. How will you show that air is dissolved in water?

Q. The level of drinking water is decreasing from the earth 🌍? Explain why by giving some examples and diagram?

Q. Which of the following prohibits the water to seep under the ground?

1. 
2. 
3. 
4.