Rocks

Question 1

Name two types of igneous rock.

Answer 1

Basalt and granite.

Question 2

How are basalt rocks made?

Answer 2

After a volcanic or fissure eruption, on the earths surface the lava cools quickly forming basalt.

Question 3

How is granite formed?

Answer 3

Granite is formed in the earths crust from magma, the magma cools slowly forming granite.

Question 4

Where can basalt be found in Ireland?

Answer 4

Giant’s Causeway, County Antrim

Question 5

Where can granite be found in Ireland?

Answer 5

Wicklow Mountains and Mourne Mts [Co. Down]

Question 6

What kind of crystals are visible in basalt?

Answer 6

No crystals visible due to rapid cooling

Question 7

What kind of crystals are found in granite?

Answer 7

Large crystals are visible due to slow rate of cooling.

Question 8

What can granite be used for?

Answer 8

Worktops

Question 9

What can basalt be used for?

Answer 9

Road chippings

Question 10

Name the three types of rock.

Answer 10

Igneous, sedimentary, metamorphic

Question 11

Name two sedimentary rocks?

Answer 11

Limestone and sandstone

Question 12

Where can sandstone be found in Ireland?

Answer 12

Co. Kerry

Question 13

Where in Ireland can limestone be found?

Answer 13

The Burren [Co. Clare] and the Midlands

Question 14

How is limestone formed?

Answer 14

From the remains of plants and animals. It’s an organic sedimentary rock.

Question 15

How is sandstone formed?

Answer 15

It’s formed from the remains of sediments (broken down rock) and is an inorganic sedimentary rock.

Question 16

What is sediment?

Answer 16

Broken down rock

Question 17

What happens to sediment and remains of plants and animals over millions of years?

Answer 17

They build up over millions of years on ocean and lake floors. They are compressed, compacted and cemented together.

Question 18

How are igneous rock formed?

Answer 18

Igneous rocks form when magma and lava cool down making granite and basalt.

Question 19

How are sedimentary rocks formed?

Answer 19

Sedimentary rocks are formed when rock particles build up on the sea floor or a lake bed.

Question 20

How are metamorphic rocks formed?

Answer 20

Metamorphic rocks form when the great heat of magma and lava as well as pressure from plate movement changes rocks.

Question 21

Give an example of where metamorphic rocks would be?

Answer 21

Sugar Loaf (Co. Wicklow)

Question 22

What kind of an igneous rock is granite and what colour is it?

Answer 22

It’s pale grey/pink and it is intrusive.

Question 23

What kind of igneous rock is basalt and what colour is it?

Answer 23

It’s extrusive and it’s dark black/brown.

Question 24

What can sandstone be used for and what colour is it?

Answer 24

It’s red and it can be used for building, decorative stone.

Question 25

What colour is limestone and what can it be used for?

Answer 25

It’s grey and it can be used for cement, steel making.

Question 26

Give two types of metamorphic rocks?

Answer 26

Quartzite and marble.

Question 27

What colour is marble and what can it be used for?

Answer 27

Marble can be in a lot of colours and it can be used for flooring, countertops and more.

Question 28

What colour is quartzite and what can it be used for?

Answer 28

Usually white to grey, it can be used for roofing tiles, as flooring,

Question 29

How is marble formed?

Answer 29

when limestone is heated to an extreme temperature that the minerals grow larger and fuse together.

Question 30

How is quartzite formed?

Answer 30

Quartzite forms when sandstone is altered by heat, pressure, and chemical activity of metamorphism

Question 31

Where can marble be found in Ireland?

Answer 31

Connemara (green marble) and Kilkenny (black marble)

Question 32

Where can quartzite be found in Ireland?

Answer 32

Croagh Patrick (Mayo) and Sugar Loaf (Wicklow)