Igneous Rocks Flashcards
1
Q
Igneous Rocks general information
A
They are formed from molten rock that has been cooled. They contain randomly arranged Crystals. They can form intrusive and extrusive igneous rocks
2
Q
Extrusive Igneous rocks
A
formed by magma which cools quickly
3
Q
Extrusive ingneous rocks examples
A
andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff
4
Q
Intrusive igneous rocks
A
Intrusive igneous rocks are formed by magma that has cooled slowly, deep underground.
5
Q
Intrusive igneous rocks examples
A
diorite, gabbro, granite, pegmatite, and peridotite
6
Q
How does the speed of cooling affect the size of the crystals in an igneous rock?
A
yes the faster the cooling, the smaller the crystals.
