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15
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How do bones change when they become fossils?
bone becomes stronger and harder
bone material is replaced by rock (minerals)
bone material changes shape
bones become lighter and weaker
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15
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What must happen for a fossil to form?
it is left unburied
it is buried quickly
it is in deep water
it is kept dry
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monster
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magnet
Take 25 points!
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gift
Win 25 points!
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banana
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15
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What do the petrified trees in Petrified Forest National Park suggest about the ancient environment?
there was a desert
there was no dry land
there was more rain
it was near a body of water
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heart
Other team wins 15 points!
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magnet
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rocket
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thief
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25
15
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The oldest fossils are usually found
on ocean beaches.
on top of mountains.
floating in rivers.
deep underground.
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15
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If a scientist finds fossilized trees in what is now a desert area, the fossils are evidence that the
area used to have no carnivores.
area used to home to small animals.
climate there was once rainy.
climate there has not changed much.
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15
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The history of how life has changed on Earth over millions of years is revealed by
bones in the desert.
the fossil record.
animals living today.
history books.
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15
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Which is a step in the process of how animals become fossils?
Most of the animal rots away, leaving only the skin.
The soft parts of an animal turn to rock.
Sediment covers an animal's remains.
An animal dies high up on a mountain.
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15
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An insect in amber is an example of
a trace fossil.
a whole body fossil.
an exposed fossil.
a fossil record.
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15
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Almost all fossils are found in ________
sedimentary rocks.
dirt that has been packed down.
groundwater.
amber.
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15
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How are fossils revealed?
people dig up soil
water washes dirt away
wind weathers away rock
all of these
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15
×
Finding a trilobite is evidence that an ancient environment was part of
a mountain.
a canyon.
a forest.
an ocean.
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15
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A _________ is an example of a trace fossil.
piece of amber
petrified tree
fossilized tooth
fossilized footprint
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seesaw
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magnet
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rocket
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lifesaver
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15
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Which of the following can become a fossil?
a large animal
a plantโs leaves
all of these.
an insect trapped in sap
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