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29 Cards in this Set
- Front
- Back
Historical Geology
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Origins of the earth/galaxy
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Physical Geology
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Taking a look at the things now.
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James Hotten
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Uniformitarianism
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Uniformitarianism
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Physical and chemical and biological laws that operate today have also been operated in the past.
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The ________ is the key to the __________.
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The present is the key to the future.
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Age of Earth
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4.6 Billion years old.
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Big bang
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12 Billion years ago.
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Atmosphere
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10 Miles thick. Air
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Hydrosphere
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Water, liquid and frozen. (75%)
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Geosphere
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Solid earth, 4,000 mile radius
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Biosphere
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Living things. Within Atmosphere and Geosphere.
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Name spheres in order.
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Atmosphere, Hydrosphere, Geosphere, Biosphere
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Open system
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Matter/Energy comes in and out
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Closed System
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No matter, only energy goes in or out
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Isolated System
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no matter/energy
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Nebular Hypothesis
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Particles somehow find each other, form stars and planets.
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List layered structure based on composition starting with the surface.
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Crust, Mantle, Core
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Crust
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Continental crust, Oceanic crust
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Mantle
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Upper mantle, D double prime, transition, lower mantle
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Continental Crust
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35 km thick. Thicker and less dense than oceanic.
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Oceanic Crust
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7km thick. Thinner and less dense.
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Lithosphere
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Solid outermost shell
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Asthenosphere
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Not liquid, but flows
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Mesosphere
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More solid than Asthenosphere
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Outer Core
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liquid, magnetic field
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Negative Feedback
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Cools something down, body sweat.
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Inner Core
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Solid, rotates
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List layered structure based on physical properties starting at surface.
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Lithosphere, Asthenosphere, Mesosphere, Outer Core, Inner Core.
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Positive Feedback
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Makes it stronger, heating of the earth
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