rocks and the rock cycle:. rocks and the rock cycle: can rocks change from one type to another?
TRANSCRIPT
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Rocks and the Rock Cycle:
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Rocks and the Rock Cycle:
Can rocks change from one type to
another?
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What is a rock?
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What is a rock? A rock is a solid, naturally occurring
chunk in the lithosphere that was melted, cemented, or pressed together.
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What is a rock? A rock is a solid, naturally occurring
chunk in the lithosphere that was melted, cemented, or pressed together. May or may not contain minerals.
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Classifying rocks:
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Classifying rocks:
Texture: Texture is a rock’s grain structure.
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Classifying rocks:
Texture: Texture is a rock’s grain structure. Geologist’s break up a rock’s grain structure
into three categories.
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Classifying rocks:
Texture: Texture is a rock’s grain structure. Geologist’s break up a rock’s grain structure
into three categories. Grain size
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Fine grain: Slate
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Coarse grain: Diorite
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No visible grain: Flint
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Classifying rocks:
Texture: Texture is a rock’s grain structure. Geologist’s break up a rock’s grain structure
into three categories. Grain size Grain shape
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Rounded grain: Conglomerate
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Jagged grain: Breccia
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Classifying rocks:
Texture: Texture is a rock’s grain structure. Geologist’s break up a rock’s grain structure
into three categories. Grain size Grain shape Grain pattern
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Non-banded grain: Quartzite
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Banded grain: Gneiss
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Types of Rocks:
Igneous rocks:
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Types of igneous rocks: Basalt
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Types of igneous rocks: Obsidian
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Types of Rocks:
Igneous rocks: This type forms from the cooling of magma or lava.
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Types of Rocks:
Igneous rocks: This type forms from the cooling of magma or lava. Extrusive igneous rocks: Formed from lava
that hardened on the surface of the Earth.
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Extrusive igneous: Rhyolite
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Types of Rocks:
Igneous rocks: This type forms from the cooling of magma or lava. Extrusive igneous rocks: Formed from lava
that hardened on the surface of the Earth. Intrusive igneous rocks: Formed from magma
that hardened beneath the surface of the Earth.
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Intrusive igneous: Porphyry
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Igneous rocks: Pumice
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Types of Rocks:
Sedimentary rocks:
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Types of Rocks:
Sedimentary rocks: This type forms when particles of other rocks or the remains of plants and animals are pressed and cemented together.
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Types of Rocks:
Sedimentary rocks: This type forms when particles of other rocks or the remains of plants and animals are pressed and cemented together. Clastic: Made of small rocks squeezed together.
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Clastic Sedimentary rocks: Shale
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Types of Rocks:
Sedimentary rocks: This type forms when particles of other rocks or the remains of plants and animals are pressed and cemented together. Clastic: Made of small rocks squeezed together. Organic: Made of the remains of plants or
animals.
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Organic sedimentary rocks: Coquina
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Types of Rocks:
Sedimentary rocks: This type forms when particles of other rocks or the remains of plants and animals are pressed and cemented together. Clastic: Made of small rocks squeezed together. Organic: Made of the remains of plants or
animals. Chemical: Made of minerals that are dissolved in
a solution and crystallize.
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Chemical sedimentary rocks: Tufa
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Types of Rocks:
Metamorphic rocks: Formed from any rock by heat and pressure deep beneath the Earth’s surface.
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Types of Rocks:
Metamorphic rocks: Formed from any rock by heat and pressure deep beneath the Earth’s surface. Foliated rocks: Grains arranged in parallel layers
or bands.
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Foliated rocks: Phyllite
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Types of Rocks:
Metamorphic rocks: Formed from any rock by heat and pressure deep beneath the Earth’s surface. Foliated rocks: Grains arranged in parallel layers
or bands. Non-foliated rocks: Grains are arranged
randomly.
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Non-foliated rocks: Hornfels
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Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
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Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 43: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/43.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 44: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/44.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 45: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/45.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 46: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/46.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 47: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/47.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 48: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/48.jpg)
Volcanic activity
The Rock Cycle
Melting
Erosion
Deposition
Heat and Pressure
Sediment
Igneous Rock
Sedimentary
rock
Magma and Lava
Metamorphic
rock
![Page 49: Rocks and the Rock Cycle:. Rocks and the Rock Cycle: Can rocks change from one type to another?](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697bffa1a28abf838cc0968/html5/thumbnails/49.jpg)
Minerals
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Minerals
What are minerals and what do they look like?
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Rocks vs. Minerals
May contain minerals. May contain organic
substances. Are classified by the
way they were formed. Occur naturally in the
lithosphere as a “chunk”.
Contain elements or combinations of elements in a specific ratio. Ex. Emerald is
Be Al Si O
May form crystals. Occurs naturally in the
lithosphere as a “chunk”.
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