Igneous Rock Quiz

Question 0

Large crystals

Answer 0

Intrusive- the rocks crystals are larger than sand sized

Question 1

Texture

Answer 1

The size of the crystals that make up the rock

Large and small

Question 2

Intrusive

Answer 2

Slow cooling
Underground
Phaneritic

Question 3

Small crystals

Answer 3

Extrusive- the rocks crystals are smaller than sand sized, or no crystals

Question 4

Extrusive

Answer 4

Fast cooling
Grows close to the surface, or above ground
Aphanitic

Question 5

Mixed

Answer 5

Porphyritic- looks like both but extrusive

Question 6

Others

Answer 6

Glassy- obsidian (looks like glass broken)
Vesicular- pumice (is holey, airy, light)
Pyroclastic- tuff (ash, dust, rock mixed together)

Question 7

Ocean crust is made up of…

Continental crust is made up of…

Answer 7

Basalt

Granite

Question 8

Mineral composition

Answer 8

Mafic

Felsic

Question 9

Why do some igneous rocks have holes

Answer 9

Bc. While cooling volcanic gases go through them and when they harden they get trapped

Question 10

Mafic

Answer 10

Dark colored

Made up of magnesium and iron

Question 11

Felsic

Answer 11

Light colored

Made up of silica

Question 12

Bonus

Answer 12

Christ Church Gate, Canterbury, England

Question 13

Igneous rocks are formed

Answer 13

By crystallization from a liquid, or magma

Question 14

Classification

Answer 14

Texture

Mineral composition

Question 15

Bowens reaction series

Answer 15

Process of how in cooling mafic rocks need hotter temperatures to stay melted so they stay down while the felsic rocks go up bc they don’t need as hot temperatures to stay melted

How mafic magma turns into felsic