Ag Science - Strand 2_Soil Formation and Classification (1)

Select the three types of rock

• igneous

• geology

• sedimentary

• metamorphic

How is igneous rock formed?

• When layers of sediments are deposited at the bottom of seas and lakes, the layers build up and compact over millions of years and solidify.

• When magma (or lava) cools and solidifies

Which of the following is a crystal found in igneous rock?

• magma

• shale

• quartz

How are sedimentary rocks formed?

• When magma (or lava) cools and solidifies.

• When layers of sediments are deposited at the bottom of seas and lakes, the layers build up and compact over millions of years and solidify.

Name the metamorphic rock formed from granite

• gneiss

• marble

Name the metamorphic rock formed from limestone

• marble

• shale

• granite

Which of the following pairs are types of physical weather?

• activity of roots and grinding action

• carbonation and freezing

• hydrolysis and activity of animals

• oxidation and reduction and activity of roots

Which of the following are types of chemical weathering?

• carbonation

• heating and cooling

• frost action

• hydration

Which of the following colonise rocks by producing acid, that dissolve minerals such as calcium and phosphorus to nutrients to decompose rock?

• bacteria

• fungi

• lichens

What are organic parent materials?

• Remains of plants which have been partially decomposed

• Anything with carbon in it exposed to acid rain