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science > rocks, minerals, soil > Flashcards

rocks, minerals, soil Flashcards

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1
Q

scientist who study rocks are…

A

geologists

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2
Q

what are rocks made up of

A

grains of different minerals

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3
Q

what is mineral made of

A

one chemical substance each

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4
Q

what are the minerals in granite

A

quartz, feldspar, mica

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5
Q

glassy crystals in granite

A

quartz

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6
Q

large pink and white crystals

A

feldspar

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7
Q

small black

A

mica

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8
Q

what is soil made of

A

small particles of rock and minerals

dung

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9
Q

what is humus

A

all things that come from living things

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10
Q

sand particles are…

A

large

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11
Q

clay particles are…

A

small

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12
Q

how much air space in sand

A

big air space

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13
Q

air space in clay

A

tiny

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14
Q

proportion of what in a soil affects its properties

A

clay and sand

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15
Q

how are ignoues rocks formed

A

when magma cools down and solidifies into a rock

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16
Q

what happens if magma cools slowly

A

large crystals from

17
Q

what happens when magma cools fast

A

small or no crystals from

18
Q

how are sedimentary rocks formed

A

layers of fragment of rocks or mud collect on sea bed.
more layers build on them
new layers press layers together
solid rock forms`

19
Q

what is limestone made of

A

little fragments of shells and grains of calcium carbonate

20
Q

how is metamorphic rock fromed

A

heat and pressure on exsting rocks

21
Q

limestone = ? metamorphic

A

marble

22
Q

sandston = ?

A

quartzite

23
Q

rocks are worn away by…

A

weathering

24
Q

what is chemical weathering

A

erosion caused by chemical reactions

25
Q

what is physical weathering

A

process that breaks rocks apart without changing their chemical composition.

26
Q

biotic weathering

A

living organism can break rocks

science (13 decks)

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