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Chapter: 5th Social Science : Term 2 Unit 2 : Hydrosphere

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5th Social Science : Term 2 Unit 2 : Hydrosphere : Text Book Back Exercises Questions with Answers, Solution, Evaluation

Hydrosphere ( Term 2 Chapter 2 | 5th Social Science )

EVALUATION

I. Choose the correct answer.

 

1. Hydrosphere is the total amount of _________ present on earth.

a) Air

b) Water

c) Land

d) Plants

Answer: b) Water

 

2. Find the odd one.

a) Ganga

b) Atlantic

c) Arctic

d) Pacific

Answer: a) Ganga

 

3. Water body that is surrounded by land on all side is called _______

a) River

b) Gulf

c) Lake

d) Bay

Answer: b) Gulf

 

4. Evaporation is the _______ stage of the water cycle.

a) First

b) Second

c) Third

d) Fourth

Answer: a) First

 

5. Water body that is partially enclosed by land and has wide opening to the sea is called __________

a) Sea

b) Strait

c) Bay

d) Pond

Answer: c) Bay

 

II. Match the following.

1 Fresh water- Sambhar lake

2 A lagoon- Palk Strait

3 Joins Indian Ocean and Bay of Bengal -Formation of cloud

4 Inland salt water lake -Chilika in Odisha

5 Condensation- Dal lake

Answer:

1. Fresh water - Dal lake

2. A lagoon - Chilika in Odisha

3. Joins Indian Ocean and Bay of Bengal- Palk Strait

4. Inland salt water lake - Sambhar lake

5. Condensation-Formation of cloud

 

III. True or False.

1. About 97% of water on the earth is salt water. ( True)

2. Water is not necessary for our basic needs. (False)

3. Water in the sea is sweet. (False)

4. We should keep the tap open throughout while washing utensils. (False)

5. We should save water. ( True)

 

IV. Answer the following.

1. Define hydrosphere.

Hydrosphere is the total amount of water present on a planet. The hydrosphere includes water that is present on the surface of the planet, underground, and in the air.

2. Why is hydrosphere important?

We need water to carry out many activities in our daily lives. We need water to drink, take bath, cook food etc., Animals and plants also need water for their survival. If there is no water, it cannot evaporate and form clouds. So there will not be any rain. Without rain, nothing will live on earth. So hydrosphere is important.

3. Name the different types of water bodies.

Lakes, ponds, streams, rivers, seas and oceans are the different types of water bodies.

 

V. Answer the following in detail.

1. What are the different stages of water cycle?

Stage I: Evaporation - The heat of the sun falls on the water bodies like oceans, seas, lakes, rivers etc. The water slowly evaporates as vapours into the air.

Stage II: Condensation - As the vapours rise high, the cooler temperatures make them cool down and turn back into liquid. This is called condensation. Wind moves the liquid around, leading to the formation of clouds.

Stage III: Precipitation - Wind movements cause the cloud particles to collide. They become rain bearing clouds and fall back onto the earth's surface by the process known as precipitation. This may occur in the form of rain, hail, snow or dew depending upon the temperature conditions.

Stage IV: Runoff and Infiltration - The water either runs off into oceans, rivers and ground surface or is absorbed into the soil (infiltration). This cycle continues.

2. Give few steps to save water.

We should be very careful about how we use the water. We have the choice to conserve water resources or pollute them further. Water pollution is a common phenomenon around us. We throw garbage, join sewage to rivers and so on, making river water contaminated and not fit for use. This, increases the scarcity of water for household use.

Tips to save water

1. Take water in a bucket for bathing instead of using shower.

2. After washing vessels check if the taps are closed

3. Don't allow the water to run while brushing the teeth and cleaning vessels.

4. Taps should not be leaky. They should not drip water.

5. Rain water must be stored properly.

 

FUN WITH

ACTIVITY

PROJECT:

Collect pictures of water bodies and write one sentance about each.


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