kinds of rocks
DESCRIPTION
TRANSCRIPT
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LITHOSPHERE
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Lithosphere
made up of rocks
outermost solid part of the earth
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ROCKS
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Where can we find rocks?
beneath the oceans
highways
EVERYWHERE
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Why rocks differ from one another?
mineral contents
air holes
Content remains of the plants and animals
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Rocks are made
up of minerals
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Physical Properties
of Rocks
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Color most observable characteristics of rocks
RubyJade
Aquamarine
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Luster
refers to the quality of light that surface of mineral reflects
Gold Pyrite
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Streakrefers to the color of a thin layer of powdered mineral
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Hardness refers to a mineral resistance to scratching
Gypsum
Diamond
Talc
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Cleavage
refers to how minerals break
Mica
Quartz
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3 Kinds of Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
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Igneous Rocks
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Igneous Rocks
are rocks which came from very, very hot and melted magma below the earth’s crust
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2 Kinds of Igneous Rocks
Intrusive Igneous Rock
Intrusive Igneous Rock
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Intrusive Igneous Rocks
rocks that form from magma trapped below the earth’s surface
have large mineral grains and a coarse grained texture
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Granite Basalt
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Extrusive Igneous Rocks
rocks formed from cooled lava on the earth’s surface
Have finer texture
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Obsidian
Pumice
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Examples of
Igneous Rocks
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Granite
formed from magma that cooled slowly
has a coarse grained texture may be pink, white-gray, or light to
moderate yellow
its mineral grains are similar in size
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Example: Granite
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Basalt
formed from lava that cooled rapidly
has fire grained texture
its mineral grains are so tiny
maybe black or dark green
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Example: Basalt
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Obsidian
formed from lava that cooled rapidly
has a texture as smooth as glass
maybe brown or black
it is hard and brittle
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Example: Obsidian
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Pumice
formed from lava
Looks like a sponge with many holes
It is light and float on water
Maybe light yellow or gray
Its mineral content glass
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Example: Pumice
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Sedimentary Rocks
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Sedimentary Rocks
formed from sediments
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Examples of
Sedimentary Rocks
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Sandstone consist of fine sand cemented together it is coarse-grained and filled with tiny
holes or spaces
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Limestone made up of shells and skeletons of small sea animals
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Conglomerate made from a mixture of round pebbles
and stones has a course mixture
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Shale formed from fine mud clay and silt. it has a smooth surface and can be slit
into layers
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Dolomite similar to limestone composed mainly of magnesium
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Metamorphic Rocks
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Metamorphic Rocks formed from igneous rocks sedimentary and even other metamorphic rocks
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Examples of
Metamorphic Rocks
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Slate comes from shale hard and smooth breaks into flat sheets
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Schist made from mudstone
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Serpentine a rock that easily crumbles to the weather it is slippery
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Quartzite made from sandstone
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Gneiss formed from shale, sandstone, granite and conglomerate
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Marble comes from limestone
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Rock Cycle
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Rock Cycle
continuous change from one form to another as a result of same process that happen in nature
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Rock Cycle
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Rock Cycle
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Rock Cycle
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Prepare by: Jobet_24 :D
Thank You
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End of the Presentation
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