Oceanography 1001: Chapter 2 Test
Terms
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- Asteroid belt
- is beyond mars
- plate tectonics
- seismic activity, volcanic activity, orogenesis, origin and evolution of ocean basins
- continental crust denisty
- less dense
- Core composition
- Ni, Fe (nickel and Iron)
- how many naturally occuring elements?
- 92
- meteoric bombardtment
- least important of earths internal heat source
- Mass
- amount of matter an object contain
- radioactivity
- most important of earths internal heat sources
- continental crust age
- oldest - 3.8 billion years old
- oceanic crust thickness
- avg ~ 3 miles
- Formation of Crust
- formed aprox. 4.6 billion years ago. marks transition for protoearth to planet earth. begining of geologic time
- continental crust thickness
- avg ~ 25 miles
- Granite
- found on continents
- Hypothesis
- a temporary or tentative explanation for a phenomenon observed in nature (how? When? where?)
- nebular hypothesis
- origin and evolution of the solar system (astronomy)
- Basalt
- found in oceans
- chemical layers
- crust, core, mantle
- Murchison Meteorite
- fell in 1969 and contained amino acids and water
- oceanic crust elevation
- -36,000 miles (mariana trench)
- Accretion
- physical addition of matter to an object
- Age of Sun
- 5 billion years
- density stratification
- layered
- Planetessimals
- crashed together to form planets
- physical layers
- outer core, inner core, lithosphere, mesosphere, asthenosphere
- Density
- measure of how closely packed atoms or molecules are in a substance
- continental crust composition
- no fe = granitic
- outer core
- liquid
- Jupiters moons
- 14
- Earths internal heat sources
- Radioactivity, meteoric bombardment, gravitational compression, residual heat of formation
- solar wind
- interplanetary motion of plasma or ionized particles away from the sun.
- astronomy
- study of the structure and composition of the universe and its properties
- inner core
- solid
- magnetosphere
- earth's magnetic field
- Mantle composition
- Mg, Fe (magnesium and iron)
- oceanic crust age
- oldest - 200 million years old
- Density Formula
- D= m/v over g/cm3
- gravitational compression
- functional heat
- asthenosphere
- semi-solid (upper semi-solid mantle)
- continental crust elevation
- +29,000 miles (Mt. everest)
- earths internal heat engine
- plate tectonics
- differentiation
- seperation
- Uranium is...
- heaviest element
- Big Bang Theory
- Origin and evolution of the universe (cosmology)
- mesosphere
- lower solid mantle
- oceanic crust denisty
- more dense
- Volume
- amount of space an object takes up
- Cosmology
- branch studying origin and evolution of universe
- orogenesis
- Mountain Building Process
- Oceanic crust Composition
- high fe content = basaltic
- Crust Composition
- O, Si, Al (oxygen, Silicon, aluminum)
- Lithosphere
- solid (crust and upper-solid mantle)
- Hydrogen is...
- lightest element
- singularity
- one object that contained all matter and energy of universe