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35 Cards in this Set
- Front
- Back
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Radioactive Dating
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When the minerals cooled, works through 1/2 lives
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Red Shift
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How things are moving, moving away from us, proof that the universe is expanding
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Red Star
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The temperature of the star
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If something is farther away it is moving ___
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faster
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Mid Ocean ridge
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Divergant, moving apart, the Atlantic is getting wider so the Pacific is getting smaller
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Linear Island Chainsa
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Result of a hot spot (Hawaii)
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Island Arc
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Result of subduction zone (Alatian Islands)
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Trench
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Subduction Zone (really deep spot in the Ocean)
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Neg or Positive: Increase in temp causes increase in clouds, prevents visible light from hitting the ground
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Negative
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Neg or Pos: Increase in temp causes increase in plants, removing CO2
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Negative
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Neg or Pos: Increase in temp causes methane ices in the oceans to melt releasing CH4 (green house gas)
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Positive
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Earth is __ in the middle
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fattest! - equator gets most of the sunlight -> hottest
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Big Bang
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matter in tiny place explodes, lots of energy fuses H and He, continuously fusing more elements
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Which planets formed first
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All at the same time!
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Spiral Galaxy
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Blue stars (die fast) younger galaxy
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Elliptical Galaxy
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Red and yellow stars (live a long time), older galaxy
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H-R Diagram
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use for far away stars, galaxy, distant
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Triangulation
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only works for really, really close stars, nearby
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We know the age of the Earth from...
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radioactive dating of meteorites (all formed at the same time)
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Small Star Sequence
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Protostar -> Main Sequence Star -> Red Giant -> White Dwarf
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Medium Star Sequence
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Protostar -> Main Sequence Star -> Red Giant -> Supernova
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Large Star Sequence
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Protostar -> Main Sequence Star -> Red Giant -> Supernova -> black hole
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A star becomes a Red Giant when...
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it runs out of H fuel, you have He turning into C
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Super Position
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oldest rocks on bottom
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Horizontality
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Deposited horizontally
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Uncomformity
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gap in geologic record, lost time
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Inclusion
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part inside is older, only in igneous rocks (chocolate chip exists before the cookie)
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Igneous Rocks
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intrusive, extrusive, formed by magma
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Metamorphic Rocks
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Heat and pressure, formed by getting squished
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Sedimentary Rocks
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has "other stuff", only rocks with fossils, formed through erosion of other rocks
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V-valley
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formed by a river
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U-valley
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formed by a glacier
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Continental drift
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jigsaw fit
fossils glaciers seafloor spreading - divergant plate boundary |
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Delta
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when river goes into an ocean, when river hits ocean looses lots of K.E. and spreads out
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Compositional (what it's made of )
Crust Mantle Core |
Crust: silicate
Mantle: peridotite Core: iron |
