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26 Cards in this Set
- Front
- Back
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What is a rock?
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Mixture of minerals
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What is the oldest ocean floor in the world? How old?
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300 million. Oldest ocean in Atlantic? 200 million years.
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Four ways which an earthquake can cause damage?
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Tsunami, Fire, Displacement, Landslides, direct seismic shaking.
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How many seismographs you need to triangulate an earthquake?
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Three
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Which layer of the Earths interior is the thinnest?
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Crust
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What’s the difference between weathering and erosion?
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Weathering is breaking it down, erosion is moving it.
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What are the two Hawaiian names for volcanic rock?
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Pahoeho a a
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How long ago did the big bang occur?
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15 billion years ago.
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. What are three main causes for volcanoes
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Hot spots, converging plates, diverging plates.
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Define positive feed back.
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Makes process go faster, process works to advance it self.
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What type of volcano is Hawaii?
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Shield volcano.
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Define Hotspot
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someplace in the mantle where magma is coming up
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Two ways organisms help to weather rocks (examples)?
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Chemically-Algae or Bacteria invades crack of rock. Physical-Tree root grows through crack of rock
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Define Tsunami-
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Series of large waves caused by earth quake.
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What type of volcano formed crater lake?
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Coned volcano
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What type of volcano formed crater lake?
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Coned volcano
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What boundary type is not associated with volcanoes?
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Transformed
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Define Subduction-
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When an oceanic plate is forced beneath an other plate.
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What is the most effective way to enlarge cracks in rocks?
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Frost wedging.
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What did the Solar System likely start out as?
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Cloud of gas and dust. What theory is that. Nebular hypotheis
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Define Earthquake
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Sudden release of built up strain. Where can we get earthquakes? Anywhere.
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Define Epicenter
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Where the earthquake occured
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. What causes a protosun to become a star?
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Fusion
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Define Differentiation-
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The process that turned the earth from looking like the moon to the snazzy planet we live on today.
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What is our best theory on how the Solar System formed?
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Nebular hypothesis
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How old is the Earth
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4.5 billion
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