chapter 5 rocks

Question 1

describe basalt rocks

Answer 1

they are extrusive rocks

they cool quickly
forming small crystals

found in giants causeway

black to dark grey

used as tiles

Question 2

describe granite

Answer 2

intrusive rock cooled slowly

Leinster batholith

used for construction

Question 3

describe limestone

Answer 3

organically formed
(dead plants and animals)

permeable

calcium carbonate cementing agent

Question 4

describe sandstone

Answer 4

inorganic sedimentary rock
formed from other broken down rocks