How can you compare igneous and sedimentary rocks?

Answer 1

Extrusive rocks are... extruded... onto the surface as the lava that we all think of. It cools fairly quickly, into rocks with fairly small crystals (might need a magnifying lens to see them). The exact chemistry of the parent magma will determine the type of rock. Oceanic volcanoes are generally basaltic (mafic or ultramafic), continental are generally granitic (felsic or intermediate). They're put down in "relatively thin" layers

Intrusive rocks cool for thousands of years beneath the surface in huge plutons or batholyths. This allows them to grow very large crystals (easily seen by the unaided eye). These intrusive rocks are almost always granitic-type rock.

My sources are:

from my science teacher who worked at the science museum

yahooanswer.com

ask.com

wikipedia the free encyclopedia

I hope this information helped. Good luck!

Answer 2

They are different because Igneous rocks are......

1. They are volcanic rocks.
2. Their are only two ways they are made.
3. Plus they are not broken rocks.

They are also different because Sedimentary........

1. They are sexy

Answer 3

Igneous rocks are formed from the solidification of magma or lava, while sedimentary rocks are formed from the accumulation and compaction of sediment. Igneous rocks have a crystalline structure and are often hard and resistant to weathering, while sedimentary rocks are composed of layers of sediment and can contain fossils. Both types of rocks can be found on Earth's surface and provide important information about the Earth's history.