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Rocks, Rock!. Mineral and Rock Vocabulary. Rock. Rock is a solid mixture of crystals of one or more minerals Rocks are categorized into 3 types on how they are made Each rock in each category is classified (named) by its TEXTURE and COMPOSITION. Igneous Rock.

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Rocks, Rock!


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rocks rock

Rocks, Rock!

Mineral and Rock Vocabulary

slide2
Rock
  • Rock is a solid mixture of crystals of one or more minerals
  • Rocks are categorized into 3 types on how they are made
  • Each rock in each category is classified (named) by its TEXTURE and COMPOSITION
igneous rock
Igneous Rock
  • Definition: Igneous rock is rock formed when magma cools and solidifies into rock. (Rock from Volcanoes)
  • Extrusive vs. Intrusive
    • Intrusive Rock- When magma cools slowly under the earths surface- causing large grained rocks
    • Extrusive Rock- when magma erupts from a volcano it is called lava, lava cools quickly causing fine (small) grained rocks
  • Felsic vs. Mafic
    • MAFIC: Low silicon level rocks which are dark colored rocks
    • FELSIC: High silicon level rocks which are light colored rocks
igneous rock examples special features
Igneous Rock Examples- special features

Felsic-

Mafic

Extrusive

Grain size-formed outside quickly

Pumice

Obsidian

Basalt

Intrusive

Grain Size-formed inside slowly

Granite

Gabbro

review time
Review Time
  • Turn to your neighbor and explain to him/her what igneous rock is, and what the 4 types of igneous rock are.
  • How are rocks grouped (3 ways)
quiz time
Quiz Time
  • Which of the following best describes this rock
  • A Extrusive Mafic
  • B Intrusive Mafic
  • C Extrusive Felsic
  • D Intrusive Felsic
sedimentary rock
Sedimentary Rock
  • Definition: Rocks that form when sediments are compacted and cemented together
  • Sediments are small fragments of rock –like sand
  • Rocks must go through several steps before they become sedimentary
    • Weathering
    • Erosion
    • Deposition
    • Compaction and Cementation aka lithification
sedimentary rock examples and special features
Sedimentary Rock Examples and special features

Clastic- rock fragments

Organic- Made from shells, skeletons, fossils and minerals

Chemical- minerals and water

Conglomerate- large fragments

Fossiliferous limestone

Chemical limestone

Sandstone medium sediment

quiz time1
Quiz Time
  • What is the best description of this rock?
  • A Clastic Sandstone
  • B Clastic Conglomerate
  • C Organic fossiliferouslimestone
  • D igneous rock
review time1
Review Time
  • Turn to your neighbor and tell them the difference between sedimentary and igneous rock.
metamorphic rock
Metamorphic Rock
  • Definition: Rock that forms when the texture and composition of preexisting rock changes due to heat or pressure.
fast five quiz
Fast Five Quiz
  • Go as quickly, and as safely as you can to the right corner. The following words are associated with what kind of rock?
  • A Sedimentary Rock
  • B Metamorphic Rock
  • C Igneous (Extrusive)
  • D Igneous (Intrusive)
energy and the changing earth
Energy and the Changing earth
  • We talked about how energy changes in food pyramids and food webs, and how that affects living organisms. Refresh:

___________ _____________________________

  • now lets talk about energy and how earth’s rocks are affected- what is chemical/mechanical energy?
decision time
Decision Time
  • Where and how can you see chemical/mechanical energy in this new system?
  • Now that you have seen some examples of rocks, and you have seen the rock cycle. If you wanted to build a strong, long lasting monument to yourself for the world to see what type of rock would you use and why?
weathering
Weathering
  • Definition: breakdown of rock into smaller and smaller fragments.
mechanical weathering
Mechanical Weathering
  • Mechanical weathering: The breakdown of rocks by physical means- by ice, wind, water force, gravity, abrasion
chemical weathering
Chemical Weathering
  • Chemical weathering: the breakdown of rocks by chemical means into new substances- by soil, water, weak acids,
erosion
Erosion
  • The removal and transport of sediment and material by wind, water or ice (glaciers)
deposition
Deposition
  • Definition: Depositing sediments, or the laying down of sediments from movement.
compaction and cementation
Compaction and Cementation
  • Definition: The squeezing and solidifying (gluing) of sediments together to finally become rock.