rocks test

intrusive igneos rocks cool

inside the earths surface

extrusive igneous rocks cool

on earths surface

magma

hot molten rock below earths surface

lava

molten rock that erupts onto earths surface

rock

a natural mixture of minerals

granite

igneous rock

3 categories of rocks

igneous,sedimentary,metamorphic

mineral grains

when magma cools the new crystals form

marble

a metamorphic rock

metamorphic rock

form from heat and pressure

igneous rock

most common type of rock form from volcanoes classified by texture

2 catergories of igneous rocks

intrusive and extrusive

intrusive rocks cool

inside the earths surface

extrusive rocks cool

on the earths surface

intrusive rocks

cool slowly

extrusive rocks

cool quickly

Intrusive rocks have

large crystals

extrusive rocks have

small crystals

3 examples of igneous rocks are

granite obsidian pumice

metamorphic rocks

form from heat and pressure

Weathering

The breaking down of rocks and other materials on the Earth's surface.

Rate of cooling

affects the texture of rocks

mineral composition

affects the colors of rocks

volcanic glass

igneous rocks that cool very fast and have no mineral grains pumice is an example.

magma rises because

it is less dense that the surrounding rock

granitic rocks

are light colored

sedimentary rocks

form from compaction and cementation and can have fossils in them

Compaction

the pressing together of rocks

the 3 groups of rock are

igneous sedimentary and metamorphic

weathering and erosion

change sedimentary rocks into sediments

foliated rocks

have layers inky metamorphic rocks

rock cycle

matter is never created or destroyed

sedimentary rocks

formed from already existing rocks

cementation

rocks are glued together

mafic and ultramafic

dark colors of rocks

glassy and coarse

textures of rocks

sandstone

example of sedimentary rock

lithification

when deposited sediments are turned into a rock

granite

made of quartz biotite feldspar

colors of igneous rocks

mafic ultramafic felsic

Limestone and Sandstone are

sedimentary rocks

andesitic rocks

middle colored has both light and dark colors

rocks are

made of a natural mix of minerals

rocks cycle

order does not matter and matter is never destroyed or created

obsidian

igneous rock

Clastic Rocks

formed from fragments of other rocks.