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Agricultural Science - Leaving Cert 2018 > Soil Formation And Classification > Flashcards

Flashcards in Soil Formation And Classification Deck (11)
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1

What are the three groups of rocks?

The three groups of rocks are igneous, sedimentary and metamorphic.

2

What do all three rock groups provide?

All three rock groups provide the parent material from which the mineral matter in our soils originates.

3

What liquid is found underneath the earth's crust?

Magma is the liquid found underneath the earth's crust.

4

What is magma?

Magma is molten (melted) rock.

5

What happens when magma is cools?

When magma cools it solidifies and forms rock.

6

How does magma form rock?

Magma forms rock when it cools and solidifies.

7

What is magma called when it appears above the earth' surface?

Magma is called lava when it appears above the earth's surface.

8

How does lava form rock?

When lava is cooled it forms rock.

9

How is rock formed from lava?

When lava cools it forms rock, just like when magma cools it forms rock.

10

What is the type of rock formed when magma or lava solidifies?

Igneous rock is the type of rock that is formed when lava or magma solidifies.

11

How is igneous rock formed?

Igneous rock is formed when lava or magma solidifies.