rocks
DESCRIPTION
TRANSCRIPT
ROCKS
ROCK/S
-are made up of one or more minerals.
There are three
types of Rocks they
are:
Types of Rocks
. Igneous Rocks : Formed from the cooling of molten rock
A. Volcanic igneous rocks- formed from molten rock that cooled
quickly on or near the earth's surface.
B. Plutonic igneous rocks- are the result of the slow cooling of
molten rock far beneath the surface.
- Igneous rocks can form above ground as lava spewing from volcanoes.
-can also form below the surface. Pockets of magma get stuck in layers of the earth. As they get closer and closer to the surface, the magma slowly cools. Granite is an igneous rock that formed from a slow-cooling pocket of magma.
Sedimentary Rocks
-Formed in layers as the result of moderate pressure on accumulated sediments.
Metamorphic Rocks -Formed from older "parent"
rock (either igneous or sedimentary) under intense heat and/or pressure at considerable depths beneath the earth's surface.
ROCKS CYCLE
