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Study
4 - Rocks and Minerals
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What mineral is used in baby powder?
talc
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Give 2 examples of igneous rocks
granite, basalt, obsidian, pumice, peridotite, scoria....
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Give 2 examples of metamorphic rocks
marble, slate, jadeite, eclogite, schist...
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How are igneous rocks formed?
Igneous rocks form when magma (molten rock) cools and crystallizes
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What mineral is used for making plaster and toothpaste?
gypsum
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Igneous, sedimentary, or metamorphic? Marble is a_______
metamorphic rock
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Igneous, sedimentary, or metamorphic? Limestone is a_______
sedimentary rock
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What mineral is used for making aluminium? Alumina is extracted from here.
bauxite
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How are sedimentary rocks formed?
Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism
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How are metamorphic rocks formed?
Metamorphic rocks are formed when other rocks are affected by great temperatures and pressures
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Name the three main types of rocks
igneous, sedimentary, and metamorphic rocks
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Igneous rocks form when magma (molten rock) ________ and crystallizes.
cools
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What rock is formed when other rocks are affected by great temperatures and pressures?
metamorphic rock
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Name three causes of weathering
wind and water, animals' hooves, plants' roots, heating and cooling, water freezing
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How is glass made?
sand and other minerals are heated until they melt
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A ______ is a solid made from one or more minerals.
rock
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Depending on the minerals rocks contain, they have different________
colors, hardness, texture (rough or smooth(, lustre (shiny or dull)
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What is a rock?
a solid made from one or more minerals
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Give an example of a mineral
salt, graphite, talc, diamond, alumina, calcite, gypsum
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Crystals can be broken into small pieces called ________.
grains
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The grey thing inside the pencil is called ___. (the tip of the pencil when sharpened)
graphite
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What is weathering?
the breaking down or dissolving of rocks on the Earth's surface
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Give 2 examples of sedimentary rocks
sandstone, limestone, shale, chalk, banded iron, glacial conglomerate
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Igneous, sedimentary, or metamorphic? Granite is an_______
igneous rock
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