Earth Flashcards

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1
Q

Name the three layers of the Earth

A

Crust
Mantle
Core (outer)
Core (inner)

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2
Q

State what a mineral is

A

Rocks that are mixtures of naturally-occurring elements or compounds

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3
Q

List the six most common elements in the Earth’s crust

A
Oxygen
Silicon
Aluminium 
Iron
Calcium
Sodium
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4
Q

Name the three groups of rock

A

Sedimentary rocks
Igneous rocks
Metamorphic rocks

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5
Q

Describe the properties of Sedimentary rocks

A

They have separate grains
Porous
Soft
Can scratch easily

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6
Q

List four stages in the making of Sedimentary rocks

A
Weathering\
                         Erosion
Transport /
Deposition 
Compaction and cementaltion
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7
Q

State the properties of igneous rocks

A

Hard

Durable

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8
Q

Describe how marble and slate are formed

A

Limestone heats under ground. Properties change and turn it into marble
Mudstone is pressured under ground and becomes slate

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9
Q

Describe the properties of slate that make it useful for roofing tiles

A

Not porous
Has layers
Can be split into sheets

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10
Q

Describe one way that rocks change over time

A

Weathering

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11
Q

State what is meant by uplift

A

Huge forces push rocks upward when continents collide

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12
Q

State the number of planets in our solar system

A

8 (9 including Pluto)

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13
Q

List the planets in size order

A
Mercury
Mars 
Venus 
Earth
Neptune 
Uranus 
Saturn 
Jupiter
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14
Q

Write down what happens to light from the sun when it hits a planet

A

It reflects

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15
Q

Name the model of the Universe with the Earth at the centre

A

Geocentric

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16
Q

Name the model of the solar system with the sun at the centre

A

Heliocentric