Topic 9 Hot Rocks Flashcards
1
Q
Define IGNEOUS ROCK
A
Rocks that are formed from the cooling of lava or magma that is thrown from the air from a volcanic eruption
2
Q
Define EXTRUSIVE
A
Igneous rocks that forms when lava cools above the surface
3
Q
Define PUMICE
A
Pumice is a rock that is full of holes making it very light, it’s colour is pale
4
Q
Define SCORIA
A
A dark igneous rock formed from gassy lava cooled down very quickly
5
Q
Define ABRASIVE
A
A property, material or substance that can easily scratch anothers
6
Q
Define BASALT
A
Dark igneous rock with small crystals
7
Q
Define OBSIDIAN
A
A smooth black rock that looks like glass
