Rocks Flashcards
A rock formed when molten rock cools and solidifies
Igneous rocks
A rock formed from other types of rocks
Metamorphic rocks
A rock formed by weathering (from sediment going under the sea)
Sedimentary rocks
What is an extrusive igneous rock ?
A rock that forms above ground
What is an intrusive igneous rock ?
A rock that forms underground
How do the rocks change when forming a metamorphic rock ?
They change physically/chemically and DONT Melt
An example of a sedimentary rock ?
sandstone, limestone, and shale
An example of metamorphic rock ?
gneiss, quartzite, marble
Example of igneous rocks ?
granite, gabbro, diabase
Why do intrusive igneous rocks have larger crystals than extrusive igneous rocks ?
Because intrusive igneous rocks are surrounded by a lot of heat