Cranfield University

Soil and microscopes - Quiz

Answer each question below, then choose Check answers to see your score. You can reveal the correct responses after marking.

1 What is the skeleton of the soil mainly composed of?

Bones of animals Mineral particles derived from rocks Tree trunks Fruit

2 What is the smallest mineral soil particle?

sand size silt size clay size pebble size

3 Which soil particles have a coarse feel to them?

Clay Sand Silt Boulders

4 Which of the following does NOT occur in soils?

Water Air Elephants Worms

5 How much air can be present in soils?

None at all! Very little Up to about 40% Between 80 to 90%

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