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16 Cards in this Set
- Front
- Back
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These are formed where tectonic plates 'crash' together.
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mountains
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Seafloor _____________ happens at the Mid-Atlantic ridge and is evidence that the
continents are moving |
spreading
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A visual effect that allows us to measure how far away some stars are.
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parallax
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Something that can be measured in rocks to
work out how old they are. |
radioactivity
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We think the universe is about __________billion years old.
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fourteen
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The asteroid belt is found between Jupiter and which other planet?
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mars
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A term used to describe the large land masses on Earth that were once joined together
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continents
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Molten rock
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magma
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A unit for measuring distances in space
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light year
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The name of the galaxy that our solar system is in.
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Milky way
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The layer between the Earth's core and crust
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mantle
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Hydrogen atoms are squashed together in stars to make helium in a process called nuclear _________ .
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fusion
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Who came up with the idea of continental drift?
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Alfred Wegener
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What causes tectonic plates to move?
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Convection currents in the mantle
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Where do earthquakes and volcanoes usually occur?
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At the edge of tectonic plates
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What causes in earthquake?
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A sudden movement of a tectonic plate
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