Rocks Flashcards

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0
Q

What are the three rock groups

A

Sedimentary
Igneous
Metamorphic

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1
Q

How are the rocks separated

A

How they were made

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2
Q

How are igneous rocks formed

A

They are formed as a results of volcanic activity. Hot molten lava. Obols into solid rock on the earths surface or deep underground

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3
Q

How are sedimentary rocks made

A

They are formed from the particles of rocks dead plants and animals. They are deposited on the side or beds of seas and lakes and build up over time to be compressed into layers of solid rock

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4
Q

How are metamorphic rocks made

A

The are formed from rocks that already exist. Igneous or sedimentary rocks are changed into new harder rocks by great heat or pressure

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5
Q

What are the rocks in the igneous rocks

A

Granite

Basalt

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6
Q

What is granite used for

A

Building

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7
Q

What does basalt look lime

A

It’s black and shaped like hexagons

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8
Q

What are the sedimentary rocks

A

Sandstone
Limestone
Slate

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9
Q

What does sandstone look like

A

Red/brown in colour

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10
Q

How I sandstone made

A

When lots of sand is worn away from the earths crust. This sand is carried away by the wind and rivers. They are deposited in the sea or in a dessert where the layers build up over time. The layers become compressed and cemented together to form sandstone. It is found in mountains in Munster

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11
Q

How is limestone made

A

Formed on the beds of shallow warm seas from the skeletons of tiny sea creatures fish and shells. These pile up over millions of years. The particles were compressed and cemented together.

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12
Q

Is lime stone permeableq

A

Ye

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13
Q

Where is a limestone pavement that is very popular in Ireland

A

The burren

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14
Q

What are the metamorphic rocks

A

Quartzite

Marble

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15
Q

What is quartzite used for

A

Road chipping and sandpaper and watches

16
Q

What is marble used for

A

Fire places
Gravestones
Ornaments

17
Q

How is granite formed

A

When magma cools very slowly deep in the earths crust.

18
Q

How is basalt formed

A

When lava from a volcano cools quickly on the earths surface.

19
Q

Where can an example of basalt be found

A

The giants causeway in the Antrim Derry plateau

20
Q

What does limestone look like

A

It varies in colour from white to grey and is laid down in strata.

21
Q

What is limestone used for

A

Many public buildings are made from limestone

Farmers use limestone to improve soil fertility

22
Q

Is is quartzite formed

A

It is an extremely hard rock made mainly from quartz p. It is made from sandstone which was changed by great heat or pressure

23
Q

How is marble formed

A

Marble is formed from limestone. It is a very hard rock that can be cut and polished. It is found in Connemara and Cork

24
Q

What is slate used for

A

To make slates for roofs, billiard and snooker tables

25
Q

How is slate formed

A

From sedimentary rock shells