Soil Class 3 Worksheet Science

MCQs

Question 1: Rocks break into smaller pieces due to:
(a) force of owing water
(b) weather changes
(c) force of wind
(d) all of these

Question 2: Which of these are the lightest?
(a) Humus
(b) Sand
(c) Clay

(d) Gravel

Question 3: Which of these animals lives in the soil?
(a) Earthworm
(b) Owl
(c) Butterfly
(d) All of these

Question 4: Which of these has the smallest pieces?
(a) Clay soil
(b) Sandy soil
(c) Humus
(d) Loam

Question 5: Which of these is obtained from things we get from the soil?
(a) Plastics
(b) Metals
(c) Petrol
(d) All of these

True & False

Question 6:

• Long ago there was only soil on the earth, and no rocks.
• Humus is made from rocks.
• We depend on the soil for most of our needs.
• Different kinds of rocks break to produce different kinds of soil.
• Clay has the largest rock pieces.
• The colour of soil depends on the minerals present in rocks.

Match the following

Question 7:
(a) Top soil           (i) Plant grown on a large scale commercially
(b) Loam              (ii) Uppermost layer of soil
(c) Crop               (iii) Mixture of sand and clay
(d) Pore space     (iv) A yellow coloured soil
(e) Sand               (v) Empty spaces between the soil particles

Fill in the blanks

Question 8:
(a) The top layer of soil, known as  _________ contains the  _________ .
(b) The colour of soil depends on the  _________ present in it.
(c) All plants grow well if  _________ is added to the soil.
(d) The  _________ the soil, the more humus it contains.
(e)  _________ soil has the largest particle size, followed by  _________ and  _________ soils.

Answer the following questions in brief

Question 9: What causes rocks to break?

Question 10: Why do most plants grow well in loam?

Question 11: How is soil formed?

Question 12: How is soil useful to us?

You can access the solutions to this worksheet here.