Rocks. Weathering And Erosion

Front 1

Sedimentary

Back 1

Rock formed as pieces of older rocks and other loose materials get pressed or cemented together or as dissolved minerals re-form and build up in layers.

Front 2

Metamorphic

Back 2

Rock formed as heat or pressure causes existing rock to change in structure, texture or mineral composition.

Front 3

Igneous

Back 3

Rock that forms as molten rock cools and becomes a solid.

Front 4

Extrusive

Back 4

Igneous rock that forms when Lava cools on Earth’s surface

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Intrusive

Back 5

Igneous rock that forms when magma cools below Earth’s surface

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Compaction

Back 6

When sediments are deeply buried, placing them under pressure because of the weight of overlying layers. This squashes the grains together more tightly.

Front 7

Deposition

Back 7

The process in which transported sediment is laid down.

Front 8

Cementation

Back 8

Where new materials stick the grains together

Front 9

Erosion

Back 9

The process in which sediment is picked up and moved from one place to another

Front 10

Mechanical Weathering

Back 10

The breakdown of rock into smaller pieces of the same material without any change in its composition.

Front 11

Chemical Weathering

Back 11

The breakdown or decomposition of rock that takes place when minerals change through chemical processes.