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seesaw
Swap points!
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star
Double points!
Okay!
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shark
Other team loses 25 points!
Okay!
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baam
Lose 5 points!
Oops!
15
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What is relative dating?
Ordering geological events without knowing their exact age.
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15
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If only 25% of carbon-14 remains, how many years old is the bone? (Carbon-14 half-life: 5730 years)
11,460
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15
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Establish the correct sequence of the four eons of the Earth's history.
Hadean eon, Archean eon, Proterozoic eon, Phanerozoic eon.
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15
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What type of rock is best to use for radiometric dating?
igneous rock
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15
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What is absolute dating?
A method that gives the exact age of a rock.
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15
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What is the principle of superposition?
The idea that lower rock layers are older than upper layers.
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What is a fossil?
Preserved remains or traces of ancient organisms.
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lifesaver
Give 10 points!
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shark
Other team loses 5 points!
Okay!
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shark
Other team loses 15 points!
Okay!
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banana
Go to last place!
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15
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What is radiometric dating?
A technique that uses isotopes
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What are isotopes?
Atoms of the same element with different numbers of neutrons.
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15
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The element that is the product of radioactive decay is known as the...
daughter element
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15
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Absolute or Relative? Daniel is older than Paula
Relative
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How old is the Earth?
Approximately 4.5 billion years.
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eraser
Reset score!
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shark
Other team loses 25 points!
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rocket
Go to first place!
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lifesaver
Give 25 points!
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15
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The % of the parent isotope remaining after 1 Half Life.
50%
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