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Teams
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banana
Go to last place!
Oops!
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fairy
Take points!
5
10
15
20
25
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rocket
Go to first place!
Okay!
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lifesaver
Give 5 points!
Oops!
15
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What is the half life of Carbon-14?
5730 yrs
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15
×
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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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The length of time required for half of the radioactive atoms in a sample to decay is its...
Half-Life
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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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Define Dendrochronology
The study of tree rings to date events and environmental changes.
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15
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What are the major stages of Earth's history?
Eons, Eras, Periods
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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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How does absolute age differ from relative age?
only absolute dating finds the age in years
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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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What are isotopes?
Atoms of the same element with different numbers of neutrons.
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lifesaver
Give 10 points!
Oops!
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rocket
Go to first place!
Okay!
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gift
Win 25 points!
Okay!
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lifesaver
Give 20 points!
Oops!
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banana
Go to last place!
Oops!
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seesaw
Swap points!
Okay!
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rocket
Go to first place!
Okay!
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baam
Lose 20 points!
Oops!
15
×
What is an atom?
The basic unit of matter.
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15
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How do fossils help us understand Earth's history?
They provide evidence of past life
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