Igneous Rocks

How are igneous rocks formed?

• When it is cold, and frozen into a solid

• They form when freezing, liquid magma from inside the Earth heats up

• They form when hot, liquid magma from inside the Earth cools and becomes solid

Which are the correct examples of Igneous rocks?

• basalt, granite, pumice,

• basalt, marble, slate, tuff

• marble & obsidian

• granulite & gneiss

What are igneous rocks NOT used for?

• stone buildings

• artwork

• bridges

• clocks

Which two statements are correct?

• 1

• 2

• 3

• 4

Where are they most likely found in NZ?

• They are not found in NZ

• Nelson

• Dunedin

• Everywhere except Dunedin

What minerals are found in them?

There are two correct answers.

• amphiboles

• micas

• pyroxenes

Who found the first igneous rock?

• George Washington

• Alex Rodriguez

• Harrison of Denver, Colo.

• Donald Trump

What is the texture of this igneous rock?

• aphanitic

• pegmatic

• phaneritic

What is the composition of this igneous rock?

• mafic

• felsic

• intermediate

Which process of the rock cycle involves the cooling of molten rock?

• melting

• metamorphism

• crystillization