//Rocks

Question 1

Rock types

Answer 1

Igneous - granite, basalt (volcanic material cooled)
Sedimentary - limestone, sandstone (compressed remains)
Metamorphic - marble, quartzite (changed by great heat/pressure)

Question 2

Basalt

Answer 2

• lava spread out and cooled very quickly
• solidified and very small crystals formed
• Heavy, black rock
• Giants Causeway, Co. Aontroim

Question 3

Granite

Answer 3

• Lava spread and cooled very slowly
• large crystals to form
• hard, multi-coloured rock
• Wicklow Lountains

Question 4

Limestone

Answer 4

• Skeletons of tiny sea creatures and shells pile over millions of years on the sea beds of shallow seas
• particles are compressed together
• layers of strata
• permeable, easily weathered
• used: manufacturers (cement), buildings (GPO), Farming (soil conditioner)
• Burren, Co. Clare

Question 5

Marble

Answer 5

• When magma forces its way into limestone it puts it under great heat and pressure causing it to change colour
• hard, cystalline rock
• used: fireplaces, headstones
• can be different colours eg. green conamara