Learn Class 4 General Knowledge - Environment and its Conservation

The term environment refers to the world where we live and spend our lives. Our environment consists of many living and non-living things, making the environment a living place.

In our environment, many plants and animals give us the material for our livelihood.

Healthy & clean environment

We live in a place that gives us many things for our survival. LIKE oxygen, shelter, and food.

So, it is our duty that keeps this environment smooth and clean. A clean environment will give us many things and give us a chance to live life better.

  • Hygiene is a must for our healthy life. It helps in preventing various diseases.
  • We also have to maintain proper sanitation by improving the health of our environment.

Three R’s

For a better environment, we consider the three R i.e.

1. Reduce:

  • For a better environment, we must not waste any resources.
  • Resources are the main things that can make and harm an environment.

2. Recycle:

  • We all know the technique of recycling waste material.
  • Because when we do the recycling of the waste material, it gets converted into a new useful product.

3. Reuse:

  • The term 'reuse' means when we use the same product again.
  • We can donate the things to needy people instead of throwing them away.
  • We can also use plastic bags to bring our home materials.

Environment and its Conservation Sample Questions for Class 4

Question 1

Which of the following is a cause of acid rain ?
A. Volcanic eruption
B. Burning of fossil fuels
C. Releasing of smoke from factories
D. All of these

Question 2

Match column 1 with column 11 and select the correct option from the given codes. Column 1 Column 11 (a) Air pollution 1. Asthma (b) Water pollution 2. Dysentery (c) Soil pollution 3. Barren land 4. Acid rain
A. (a)-1, (b)-2, 4,(c)3
B. (a)-1, 2, (b)-4, (c)-3
C. (a)-1,4, (b)-2, (c)-3
D. (a)-4, (b)-1, 2, (c)- 3

Question 3

What can the bus-driver do to reduce the pollution caused by his bus ?
A. Send the bus for servicing more regularly
B. Tie a plastic bag around the exhaust pipe
C. Use a bigger exhaust pipe
D. Put a silencer at the exhaust pipe

Question 4

Select the INCORRECT match from the following. Cause of soil erosion Mathods of soil conservation
A. Running water carries the topsoil with it ------------------> Embankments
B. Strong winds blow away humus-rich topsoil --------------> Wind breaks
C. Indiscriminate felling to trees ------------------->Afforestation
D. None of these

Question 5

Which of the following statements is incorrect ?
A. Non-biodegradable household wastes can decrease soil fertility.
B. Planting of trees can help in preventing soil erosion.
C. Terrace farming helps in preventing landslides.
D. Cutting down of trees in large numbers is called afforestation.