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15
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To learn how Earthโs Atmosphere has changed over time, scientists study air bubbles in what?
ice cores
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How old is the Earth?
4.6 Billion years
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What do you call the supercontinent landmass formed million years ago?
Pangea
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thief
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fairy
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shark
Other team loses 10 points!
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baam
Lose 25 points!
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15
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Which substance would best preserve the soft parts of an organism (not the bones, teeth, and shell)?
amber
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Which era is known as the age of reptiles (dinosaurs)?
mesozoic
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What drives the process of plate tectonics?
Heat of the Earth, convection currents
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seesaw
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gift
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fairy
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lifesaver
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15
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Which fossil is the youngest?
mammoth tusks
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Organization of the major events on Earth with the appearance, evolution, and extinction of Earthโs organisms is called the
Geologic Time Scale
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What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?
environmental changes
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What is the processes that shape the Earth continue as they have since the Earth formed. (Hint, it's a really long word)
Uniformitarianism
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type of rock formed through the cooling and solidification of magma or lava.
igneous
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Radioactive dating is used to find the ______________ age of a rock or fossil?
absolute (exact)
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trap
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star
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gift
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thief
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How do scientists know that some mountains were once at the bottom of an ocean?
Dinosaur bones have been discovered in the mountains.
Marine fossils have been found on the peaks of some mountain
Freshwater rivers flow to the ocean.
Saltwater fish are found in some mountain streams.
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