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Teams
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thief
Give points!
5
10
15
20
25
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rocket
Go to first place!
Okay!
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shark
Other team loses 25 points!
Okay!
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thief
Give points!
5
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25
15
×
Can animal footprints become fossils?
Yes! Since footprints are the traces of a living thing, they can be fossilized.
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5
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Rock layers are called __________________.
Strata
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20
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What is a gap in the fossil record?
It is a time period when no fossils formed.
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baam
Lose 10 points!
Oops!
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star
Double points!
Okay!
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gift
Win 15 points!
Okay!
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banana
Go to last place!
Oops!
15
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What is a fossil record?
It is the layers of rock and the fossils preserved in them.
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Okay!
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seesaw
Swap points!
Oops!
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shark
Other team loses 20 points!
Okay!
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fairy
Take points!
5
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25
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thief
Give points!
5
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25
15
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Ancient dragon flies are much larger than modern day dragon flies. What can scientists conclude about Earth's atmosphere in the past?
There was more oxygen in the air, which allowed the dragon flies to grow larger.
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10
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The earliest multicell organism fossils are of marine animals. What can scientists conclude about Earth at this time?
The Earth was primarily covered with water.
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15
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Name two traits that make for a GOOD environment for forming fossils.
Possible answers: mud or wet sediment, water to move sediment, pressure can build up, organisms live in the area, no erosion
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trap
No points!
Oops!
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shark
Other team loses 15 points!
Okay!
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shark
Other team loses 15 points!
Okay!
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baam
Lose 15 points!
Oops!
25
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How can radioactive dating help us date fossils?
Igneous rock layers can give exact ages and we can use them to estimate the age range of fossils found between them.
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15
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In a rock layer, where are the younger organisms found?
Closer to the surface.
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15
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Why are fossils rarely found in metamorphic and igneous rocks?
The heat needed to create the rocks usually destroys the organism before it can become a fossil.
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20
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Between 275 and 70 mya, the majority of fossils found are of dinosaurs. What can scientists conclude about the dinosaur population at the time?
Dinosaurs were the dominant animal alive during that time.
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15
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When using indirect evidence, can scientists know for sure what happened in the past?
They can't! Indirect evidence only allows them to make an educated guess.
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