3 Types of Rocks There are 3 different types of rocks Igneous Sedimentary Metamorphic Igneous Rock Igneous rocks are formed by magma and lava as it cools Igneous rocks form in two different ways ID: 668669
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Slide1
The rock cycle
Lets Rock!Slide2
3 Types of Rocks
There are 3 different types of rocks;
Igneous
Sedimentary
MetamorphicSlide3
Igneous Rock
Igneous rocks are formed by magma and lava as it cools. Igneous rocks form in two different ways.
Rock that comes from lava cools very fast and can either be very light and airy or the rocks can be glassy.
Rocks that come from magma are formed under ground. They are often times very hard and have more colors.Slide4
Igneous rock Slide5
Sedimentary Rock
Sedimentary rock is made when sediments (sand, gravel, and dirt) are pressed together over time and become a rock
Sedimentary rock is formed in layers.Slide6
Sedimentary Rocks
Limestone
Shale
Sandstone
GraniteSlide7
Metamorphic Rock
Metamorphic rocks are made from other rocks.
Heat and pressure help change an igneous or sedimentary rock into a new kind of rock (think about how a caterpillar becomes a butterfly)Slide8
The Rock CycleSlide9
Parts Of RocksSlide10
Rocks have many different parts
Rocks can be sorted into groups by looking at their parts. Some rock parts are:
Crystals
GrainsSlide11
Crystals
Crystals are different atoms that are formed in a pattern. They can be big or small, fat or thin. Slide12
Grains
Grains are smaller pieces of rock or sediment. Grain size is something that is used a lot to help decide the rock type. Slide13
Rock Explorers
Lets look at some rocks!
Get a partner and a magnifying glass
Come and pick up a rock (you will be looking at one rock at a time)
You and your partner will take turns looking at the rock. Decide if you think that crystals are large or small. Look to see if it has grains.