rock type powerpoint by: allison, brianna, & jade
TRANSCRIPT
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Rock Type Powerpoint
By: Allison, Brianna, & Jade
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Table of Contents
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Rock Cycle
Fly Swatter Game!!
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Igneous Rocks
(Fluid and Fire Rocks)
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Facts• Forms when hot magma beneath Earth’s surface cools down and
hardens.• The longer the lava takes to cool, the larger the rocks.• The rocks that form and harden below Earth’s surface that cool slowly are
called intrusive rocks.• Extrusive rocks form and harden as soon as they reach the Earth’s
surface and they cool quickly.• Igneous rocks are classified according to their composition and texture.• Igneous rocks turn into sediment from weathering and erosion which
forms into sedimentary rock through lithification (compacting and cementing).
• By heat and pressure, igneous rocks can form into metamorphic rocks. • When igneous rocks melt, magma is formed.• Magma is molten rock beneath the Earth’s surface, while lava is molten
rock on Earth’s surface. It becomes lava once it erupts from a volcano.
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Basalt
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Granite
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Obsidian
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Scoria
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Pop Quiz!!
A rock that forms below the surface of the Earth is called a/an ____________ rock.
a) Innerb) Intrusivec) Outerd) Extrusive
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Sedimentary Rocks
(Slowly Built Layer Rocks)
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Facts• Formed from particles of sand, pebbles, and shells.• Those particles are called sediment that, over time, forms
layers that will harden and form sedimentary rocks.• Formed in bottoms of lakes and oceans.• Usually soft and can break easily but it does harden overtime.• Only type of rock that can contain fossils.• Transformed into metamorphic rock by heat and pressure.• There are three main types of sedimentary rocks: clastic,
organic, and chemical.• Clastic rocks are made of pre-existing pieces of rock.• Organic rocks are made from organisms.• Chemical rocks are made of large amounts of minerals that
were dissolved in water.
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Sandstone
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Limestone
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Conglomerate
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Breccia
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Pop Quiz!!
Sedimentary rocks are the only type of rocks to possibly contain what?
a) Magmab) Crystalsc) Fossilsd) Lava
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Metamorphic Rocks
(Changes in Form Rocks)
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Facts• Form underneath the Earth’s surface from the process of
metamorphism where rocks change form due to pressure and a great amount of heat
• Can form from intense heat, pressure, or chemical reactions.
• When an igneous, sedimentary, and any other type of rock morph together, metamorphic rocks are formed.
• The heat makes the rock more flexible for when it undergoes change.
• Metamorphic rocks have ribbon like layers and could possibly have skinny crystals.
• When metamorphic rocks melt, they turn into magma which, over time, cools and forms igneous rocks.
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Marble
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Amphibolite
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Schist
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Quartzite
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Pop Quiz!! How are metamorphic rocks formed?
a) Right after lava erupts from beneath Earth’s crust and turns into magma.
b) By layers of sediment piling up overtime.
c) From intense heat, pressure, or chemical reactions
d) None of the above
Click here to take the Rock
Type Quiz
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The Rock Cycle
•The rock cycle is a cycle where rocks continually change what type of rock they are over long periods of time.• Heat and pressure, melting, weathering and erosion, and compacting and cementing are all processes that help change a rock into a different type of rock.•The 1st diagram on the next slide shows how each type of rock is formed.•The 2nd diagram shows where each type of rock is formed.•The 3rd diagram is a very detailed and complex rock cycle diagram just to show you how confusing the entire rock cycle really is.
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The Rock Cycle Diagrams
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Fly Swatter!!
Win mints by beating your opponent and getting the correct
answer!
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sediment
extrusiveigneous
sedimentary
magma
lava
metamorphic
intrusive