Igneous rocks

Question 1

Igneous rocks

Answer 1

form when molten rock from the Earth’s mantle cools and hardens
Examples of igneous rocks include granite and basalt

Question 2

Examples of igneous rocks include

Answer 2

granite and basalt

Question 3

Igneous rocks features

Answer 3

Erode and weather very slowly
Can be categorised into two types:

Intrusive igneous rock - forms within the ground, cools slowly, and has large course crystals

Extrusive igneous rock - forms on the

Earth’s surface, and cools quickly, forming smaller crystals

Has interlocking crystals

Fewer joints and weaknesses than in other rocks