Lithosphere and the rock cycle

Question 1

Soil

Answer 1

Made up of eroded pieces of rock and organic matter.

Question 2

Soil layers

Answer 2

1: Organic layer
2:Top soil
3: Subsoil
4: Parent material
5: Bedrock

Question 3

Igneous rock

Answer 3

Formed by the cooling of molten magma

Question 4

Sedimentary Rock

Answer 4

Formed by the deposition of smaller rock particles eroded by wind or water.
Solidifies due to pressure

Question 5

Metamorphic Rock

Answer 5

Igneous or sedimentary rocks that have been altered due to heat, pressure and chemical change in the earth’s crust.
Always formed deep underground where there is high heat and pressure

Question 6

Human impact on soil

Answer 6

The use of fertilizers lowers the pH of soil, preventing native plants from taking up nutrients.
Constant compression of soil due to heavy use of machinery and livestock results in constant compaction of soil