The Rock Cycle :
The Rock Cycle The Rock Cycle describes the process the earth uses to recycle rocks.
Slide 3:
Rocks are made of different types of minerals.
There are three types of rocks: sedimentary, metamorphic, and igneous.
Sedimentary Rocks :
Sedimentary Rocks These layers are pressed
down more and more through
time, until the bottom layers
slowly turn into rock. Over many years, little pieces of our earth are broken down and worn away by wind and water. These little bits of our earth are
washed downstream where they
settle to the bottom of the rivers,
lakes, and oceans.
Sedimentary Rocks :
Sedimentary Rocks
Metamorphic Rocks :
Metamorphic Rocks They have been changed by
heat and pressure. These rocks are formed by
tons and tons of pressure under
the earth’s surface. Metamorphic rocks were once
sedimentary rocks or igneous
rocks.
Metamorphic Rocks :
Metamorphic Rocks
Igneous Rocks :
Igneous Rocks Igneous rocks are nicknamed fire rocks. They begin as magma, melted
rock, deep within the earth’s
mantle. Igneous rocks are formed when
magma cools and becomes solid. When volcanoes erupt, magma
rises to the earth’s surface. When magma appears above the
Earth, it is called lava.
Igneous Rock :
Igneous Rock