Flashcards
8.1 The Earth and its rocks
Flashcards do conjunto (22)
- 1What is geology?The study of rocks, their history and the processes that form and change them.
- 2What is crust?The outer most layer of the Earth, composed of solid rock.
- 3What is the asthenosphere?Top layer of the mantle, composed of 'plastic' rock.
- 4What is the core?The core is the inner most layer of the Earth.
- 5What is the rock cycle?A model geologist used to explain the inner cycle change that rocks undergo.
- 6What are the three main types of rock?Igneous rocks, Sedimentary rocks, Metamorphic rocks.
- 7How is an Igneous rock formed?Rock formed from cooling magma or lava.
- 8How is a sedimentary rock made?Rock made by the sediments being cemented together.
- 9What is a metamorphic rock?Rock form when temperature and or pressure alter existing rock.
- 10Name the processes that change the three different types of rockWeathering, erosion, deposition, compaction and cementation, melting, crystalisation & metamorphosis.
- 11What is weathering?Rock broken down into smaller pieces.
- 12What is erosion?The broken rock material that is transported to one place to another.
- 13What is deposition?The broken rock material settles, forming sediment.
- 14What is compaction and cementation?The sediment becomes packed together, and then chemically bound.
- 15What is melting?A solid rock heated forming magma.
- 16What is crystallisation?When the magma becomes solid.
- 17What is metamorphosis?A rock changed by intense heat and or pressure.
- 18Name the processes of physical weathering.Wind, temperature change, water and ice, crystallisation of salts.
- 19What is chemical weathering?Water or chemicals in water or air, reacting and breaking down rock
- 20What is biological weathering?Living things and their products breaking down rock.
- 21What are the agents of erosion?Factors that erosion are:
Water, Wind, Gravity and Ice - 22What is cement?Natural chemicals found in water that can bind sediments together.
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- FlashCards sobre 8.1 The Earth and its rocks, criado por Jibreel Hamdan em 11-10-2017.
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- Jibreel Hamdan
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