Soil

Soil Worksheet-4

Multiple -Choice Questions:

1. ________ is very fine sand.

(a) Dust                       (b) Cloud

2. _________ are formed around dust particles.

(a) Stones                    (b) Clouds

3. If there is/are no ________, then there would be no rain.

(a) Dust                       (b) germs

Soil Worksheet-5

Multiple -Choice Questions:

1. What is the dark-coloured substance formed from dead remains of plants and animals called?

(a) Humus                  (b) Soil erosion

2. Soil erosion increases when we ______ more trees.

(a) plant                      (b) cut

3. Soil erosion ______ when we plant more trees.

(a) increases               (b) decreases

Soil Worksheet-6

Multiple -Choice Questions:

1. Plants get most of their nutrients from the ______.

(a) topsoil          (b) bottomsoil

2. What should be built across rivers to stop floods?

(a) Dams                     (b) Houses

3. What is the protection of soil from erosion known as?

(a) Soil conservation

(b) Soil erosion