Lithosphere (soil and worm)

Question 1

What is the lithosphere.

Answer 1

Rigid part that is part of the Earth’s crust and upper mantle. It includes plains, valleys, volcanoes etc. It is essential to life. (natural resources).

Question 2

True or False. Due to climate and human activity, the lithosphere is always changing.

Answer 2

True

Question 3

What is soil?

Answer 3

It is the surface that enables plants to grow

Question 4

Which 3 spheres create the mixture of soil?

Answer 4

Lithosphere, hydrosphere and atmosphere.

Question 5

What are the 2 processes in the formation of soil?

Answer 5

1. The breakdown of the bedrock by erosion
2. The influx of organic matter from different kinds of debris (example leaves, plants)

Question 6

True or False. Worms play an important role in maintaining the health of soil.

Answer 6

True

Question 7

How do worms part of the ecosystem for the soil?

Answer 7

1. They are scavengers and helps recycle the dead and decayed plant matter
2. It increases soil fertility by burrowing and feeding on dead plants and organic material. This helps transfer nutrients out in worm casts.

Question 8

From top to bottom the 6 layers of soil are:

Answer 8

1. Organic layer (O)
2. Topsoil (A)
3. Eluviation layer
4. Subsoil (B)
5. Parent rock (C)
6. Bedrock