Class 3 Rocks and Soil Question Answer

Class 3 Rocks and Soil Question

Class 3 Rocks and Soil Question Answer | New Science Ahead Class 3 Question Answers | Additional Question and Answers to prepare for exams..

Fill in the blanks

  1. Rocks are made up of …………….
  2. Earth is made up of …………. and …………
  3. ………………….is the hardest rock.
  4. ………………….is the softest rock.
  5. Soil contains ………. and …………

 

Answers

  1. Minerals
  2. Rocks, soil
  3. Diamond
  4. Chalk
  5. Air, water

 

Answer the following questions

Define geologist.

A person who studies how rocks and soil make up the earth is called a geologist.

 

What are the two main components of soil?

There are two main components to soil: tiny pieces of rocks and rotten plant and animal parts.

 

What is humus?

Rotten plants and animals are called humus.

 

Why is humus useful to plants?

Plants need humus for healthy growth since it contains nutrients they need to grow.

 

Do plants grow well in clayey soil?

Plants do not grow well in clayey soil since it holds a lot of water and is sticky.

 

Why is sandy soil not good for plants?

In sandy soil, there are large particles with lots of spaces between them, which allows water to flow easily through them 

 

Why soil is important?

Plants grow in soil. It contains nutrients, or food substances, that they need for growth. Animals and other living things also live in the soil.

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