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29 Cards in this Set

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