Balbharati solutions for General Science Integrated [English] Standard 6 Maharashtra State Board chapter 1 - Natural Resources – Air, Water and Land [Latest edition]

Observe the picture alongside and answer the questions.

1. Where do we see the birds?
2. Where is the cow grazing? 
3. Locate the trees and the road. 
4. Where does the river come from? How does it flow? 
5. Where is the aeroplane? 
6. Where are the fish seen? 
7. On what is the sailboat floating?

Briefly explain main layers of the atmosphere.

What is the similarity in the three pictures below?

What would have happened if there were no air on the earth?

Observe how much water is used and for what purposes it is used in your house for a whole day. Record it in a chart like the one shown here. Discuss this data in the class. Divide the total amount of water used in your house by the number of persons to find out how much water each person needs.

You will see that it is almost impossible for us to spend even a single day without water. We need to drink three to four litres of water every day so that all our bodily functions run smoothly. Other living things also require water, although the amount of water they need may vary according to the size of their body. Thus, we see that water is very important.

If hydrogen gas burns in air, it combines with oxygen and water is formed. We have learnt about some characteristics of water in the previous standards.

1. For which purposes is water being used?
2. Do other living things use water like we do ?

What is land made of?

What do you see on land?

What has man created on land?

If a deep pit is dug in the ground, what do you find there?

Is the land flat everywhere?

Does man produce soil/land?

1. Take a transparent plastic bottle, a handful of soil, some stones, sand, some dry leaves and water.
2. Cut off the upper tapering part of the bottle. Put the rest of the materials in the lower part and add water.
3. Stir the mixture thoroughly and put it aside.

Observe it the next day and answer.

• How does the mixture in the bottle look now?
• Do you see layers in it?
• What is seen in the different layers from top to bottom?

Explain, with the help of a diagram, the various layers of the land.

Obtain specimens of soil from various places in your surroundings. Try this. such as your own yard, a garden, hills, river banks, fields and rocky ground.

What are the constituents of soil? Classify them as biotic and abiotic constituents.

The layer of ozone gas absorbs ______ rays that come from the sun to the earth.

Of the total water available on the earth, fresh water forms ______ percent.

Both ______ and ______ constituents are present in the soil.

Why is it said that the ozone layer is a protective shell of the earth?

Why is it said that water is life?

Why is it said that seawater is useful even though it is not potable? 

What will happen if microbes in the soil get destroyed?

What will happen if the number of vehicles and factories in your surroundings increases?

What will happen if the total supply of potable water is finished?

Match the following.

Name the following.

Constituents of the biosphere

Name the following.

Biotic constituents of soil. 

Name the following.

Fossil fuel

Name the following.

Inert gases in the air

Name the following.

Gases that are harmful to the ozone layer

Land and soil are the same things.

The water in a lake is called ground water.

It takes about 1000 years to form a 25 cm thick layer of soil. 

Radon is used in decorative lights.

Answer in your own words.

Explain with the help of a diagram of how soil is formed.

Answer in your own words.

Why is there a shortage of water even though it occupies about 71% of the earth’s surface?

Answer in your own words.

What are the various constituents of air? Write their uses.

Answer in your own words.

Why are air, water, and land considered to be valuable natural resources?

Obtain detailed information about the work of the India Meteorological Department.

Find a remedy for water scarcity.