Primary School (English Medium) इयत्ता ४ - CBSE Question Bank Solutions for Environmental Studies

Collect some bricks. Lay them on the ground in a line as shown in the picture. Try walking on them. Was it easy?

Make a small bridge by tying 4 or 5 bamboo poles together. Ask your teacher to help you. Now walk on your bridge.

1. How did you feel?
2. Did you fall down?

Do you think it would be easier to walk on this bridge barefoot or with shoes or slippers? Why?

Observe pictures 1 and 2. In the pictures, children are pulling the buckets from the well. 

1. Can you tell the difference in both the pictures?
2. Which would be easier – using the pulley or not using it to lift things?

Look around you – where all do you see the use of pulleys? List them.

With the help of a pulley, try and lift various things, as shown in the picture.

How is this bridge different from a bamboo bridge?

How many people do you think can cross the bridge at one time?

You have seen how children use a different kind of bridges, to cross rivers and other uneven areas to reach school.

If you had a chance, which bridge would you like to use? Why?

Do you have to cross any bridge on the way to your school? If yes, what is the bridge like? Draw its picture.

Find out from your grandparents, what kinds of bridges were there when they were young.

Is there any bridge near your house? Find out more about the bridge.

• Where is the bridge – over water, over a road, between two mountains or somewhere else?
• Who all use the bridge? Is it used by people on foot and also by vehicles and animals?
• Does the bridge seem to be old or is it new?
• Find out what materials are used in making this bridge. List some of them.

Draw a picture of the bridge in your notebook. Do not forget to draw the train, vehicles, animals or people who cross the bridge.

Imagine what difficulties there would be if the bridge was not there? Let us find out some other ways by which children get to school.

Have you seen any other kind of boats?

Can you think of other ways by which we can travel on water?

Have you ever sat in a camel-cart or horse carriage (tonga)? Where? Did you climb on it yourself, or did someone help you?

How did you feel riding in the cart? Also, share your experience in the class also.

Do you have bullock-carts where you live?