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  • huh, how old is this rock
  • That is when you look at the amount of decayed radioactive material to determine the age of a rock
  • I'll get my friend the racccoon to date it for me using absolute dating
  • It seems to be an intrusion.  That is when magma rises from the earths surface and melts through layers of rock
  • The law of superposition states that the oldes layer is on the bottom and the youngest layer is on the top
  • after he finds the age he can use the law of superposition to find the age of the surrounding rocks
  • Now with this rock and some index fossils, we can relatively date this cave
  •  after thoroughly examining the rock, i can safely determine that the rock is 6,943 years old
  • I should make a graph of its radioactive decay.
  • Then I can add more information to my model of the geological time scale. From the creation of the earth to today
  • Now i'll go back to studying my fossils, rock samples, and ice core samples.
  • the rock cycle is pretty rad. there are three main types of rocks. Igneous sedimentary and metamorphic. weathering and erosion make a rock into sediment which will turn into sedimentary over time with pressure from new sediment
  • When rocks melt they form magma. Then, when the magma cools it turn into igneous rock
  • When a rock is put under intense heat and pressue, it forms a metamorphic rock.
  • I'm no dinosaur, but i sure know a lot about fossils
  • Fossils are the remains or traces of ancient life found in sedimentary rock. The fossil record, however, is the history of all life on Earth.
  • Some fossils can be tracks, bones, amber, and imprints of things like leaves.
  • Some processes of fossilization are molding, mineralization, or impressions.
  • Things are more likely to fossilize if they're buried quickly, so they aren't eroded or eaten by scavengers.
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