Obj 2 changes rocks undergo over time
Upcoming SlideShare
Loading in...5

Obj 2 changes rocks undergo over time






Total Views
Views on SlideShare
Embed Views



0 Embeds 0

No embeds



Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
Post Comment
Edit your comment

    Obj 2 changes rocks undergo over time Obj 2 changes rocks undergo over time Presentation Transcript

    • Rocks: Mineral Mixtures
    • Understanding Rock Rock-a solid mixture of crystals of one or more minerals. -Rocks are very useful.
    •  RockCycle-The process by which one rock type changes into another.
    • The Rock Cycle
    • The Rock Cycle Cont.
    • Rock Classification Composition-the minerals a rock is made of. Texture-determined by the sizes, shapes, and positions of the grains of which it is made.
    • Igneous Rock Igneous comes from the Latin word for “fire”. It is made by Temperature, Pressure, and Composition.
    • Intrusive Igneous Rock When magma cools beneath the Earth’s surface. It has a coarse- grained texture.
    • Extrusive Igneous Rock Igneous Rock that forms on the Earth’s surface.
    • Sedimentary Rock Wind, water, ice, sunlight, and gravity all cause rock to weather into fragments. Erosion is the process when rocks fragments are moved.
    •  Layers of sediment become compressed and cemented over time. Dissolved minerals separate out of the water and form a natural glue that will bind the sediments together. Sedimentary rocks are formed near the Earth’s surface, with little heat and pressure.
    • Categories of Sedimentary Rocks Clastic-whenrock or mineral fragments, called clasts, stick together.
    •  Chemical-forms when minerals crystallize out of a solution (sea water) and become rock.
    • Organic-form from the remains of animals.
    • Metamorphic Rock Rockthat forms when the texture and composition of pre-existing rock changes due to heat and pressure.
    • Origins of Metamorphic Rock The texture can change when the surroundings change. Most change by pressure that occurs at depths greater than 2 km (about 6000 ft.) The temperature range is 50 C to 1000 C (122 to 1832 F)
    • Metamorphism-when the rock Contact comes in contact with magma. Metamorphism-when a lot of Regional pressure builds up in rocks buried in the Earth or when large pieces of the Earth’s crust collide with each other.
    • Textures of Metamorphic Rock Foliated Metamorphic Rock-contains mineral grains that are aligned by pressure.
    •  Non-foliatedMetamorphic Rock-the texture of metamorphic rock which mineral grains show no alignment.