HARD
7th CBSE
IMPORTANT
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Write a paragraph on soil erosion. Also mention ways to prevent it.

Important Questions on Soil

HARD
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 1
Name three possible pollutants of the soil.
HARD
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 1
Among Lead, mercury and arsenic, do any or all of these also pollute water? Explain how.
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 2
What is meant by soil profile?
HARD
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 2
Draw arrows and label the different horizons in the picture.
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MEDIUM
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 2
Why is the uppermost horizon generally dark in colour? How is this layer beneficial to plants?
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MEDIUM
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 2
Name the layer of soil down to which water can penetrate.
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MEDIUM
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 2
In which layer (horizon) are you most likely to find small insects and worms?
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HARD
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 9 - Soil>STEP UP>Q 3

In the box, rank these components of soil according to the size of the particles, from largest to smallest:
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Sand
Clay
gravel
silt