rock
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This is a type of Rock...TRANSCRIPT
Rocks
8.3.4 Explain how igneous, metamorphic, and sedimentary rocks
are interrelated in therock cycle.
Students do not need to know the examples of each type of rock shown in this powerpoint. They are for information only.
Each type of rock is formed differently and
can change fromone type to another
over time.
Types of Rocks
Sedimentary Rocks
Metamorphic RocksIgneous Rocks
Sedimentary RocksHow They are Made
• Forms from the compaction and/or cementation of rock pieces, mineral grains, or shell fragments called sediments.
• Sediments are formed through the processes of weathering and erosion of rocks exposed at Earth’s surface.
• Sedimentary rocks can also form from the chemical depositing of materials that were once dissolved in water.
Types of Sedimentary Rocks
Gypsum
Sandstone
Shale
Limestone
Conglomerate
Igneous RocksWhat are They?
• · Forms when molten rock (magma) cools and hardens.
• · If cooling takes place slowly beneath Earth’s surface, the igneous rock is called intrusive.
• · If the cooling takes place rapidly on Earth’s surface, the igneous rock is called extrusive.
Types of Igneous RocksGranite Scoria
Pumice Obsidian
Metamorphic RocksWhat are They?
• Forms when rocks are changed into different kinds of rocks by great heat and/or pressure.
• They are heated, squeezed, folded, or chemically changed by contact with hot fluids.
Types of Metamorphic Rocks
Schist Gneiss
Rock Cycle• The rock cycle is an ongoing process.
• It is a series of natural processes that can change rocks from one kind to another.
Check out the diagram on the Check out the diagram on the next slide!next slide!
Roc
k C
ycle
Roc
k C
ycle
Rocks
8.3.4 Explain how igneous, metamorphic, and sedimentary rocks
are interrelated in therock cycle.
Thank you!!!