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Fossil Record DE Review 8th Gr Flashcards | StudBud
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Fossil Record DE Review 8th Gr
Fossil Record DE Review 8th Gr
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Flashcards
27 cards
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Questions
27
Answers
1
What do scientists call this?
a cladogram
a hypothesis
a theory
linear relationships
2
What fossilization replaces living tissue with minerals & preserves the organism's shape?
mold
permineralization
carbonization
petrification
3
For the most part, fossils give us information about the ________ of past life forms.
sleeping habits
color
mating habits
structure
4
If an organism cannot adapt to it's environment, what likely happens to it?
It migrates
It evolves
It reproduces
It goes extinct
5
An insect trapped in amber is what type of fossil?
Intact
Cast
Mold
6
Which of these is not a type of fossil?
A decomposing organism
mold
cast
index
7
Which time period is the oldest from the choices below?
Cambrian
Devonian
Jurassic
Cretaceous
8
Which object has the
best chance
at becoming a fossil?
a worm
a leaf
a jellyfish
A clam shell
9
Why are index fossils good indicators of geologic time?
They lived during a long period of geologic time.
They lived with humans.
They are rare
They lived during a short period of geologic time.
10
Which law (principle) explains the oldest rock layers are located beneath younger rock layers?
The principle of cross-cutting relationships
The principle of superposition
The principle of core to crust
The principle of uniformitarianism
11
What type of fossilization process forms a dark coating on top of a dead organism?
petrification
cast & mold
carbonization
premineralization
12
Paleontology is the study of rocks. (True or False)
False
True
13
Which fossil would make the most likely choice for an index fossil?
Coelacanths
Horseshoe crab
Crinoid
Ginkgo
14
How did scientists learn about Earth's incredible history?
Studying earthquakes, lava and weather patterns.
Studying rock layers and the fossils within them.
Studying planet's orbits and stars.
Reading through ancient texts written by scholars.
15
Scientists can estimate the ages of rock if they contain certain _____________.
soil
minerals
index fossils
sediments
16
Geology is the study of _______.
rocks & minerals
fossils
fossil record
Earth's history
17
Scientists believe life on Earth began how many years ago?
350 million
1 billion
3.5 billion
2 billion
18
Because of mass extinctions, scientists think what % of species that have lived are extinct?
50%
98%
75%
25%
19
Fossils are only of animals. (T or F?)
True
False
20
Which one of these does
not
increase the chances for an organism to become a fossil?
having a skeleton
slow burial
gentle burial
little exposure to oxygen
21
Which rock layer is the youngest?
F
E
A
M
22
Which is an example of
weathering
?
when the temperature changes
when heat & pressure make metamorphic rocks
water freezes in rock cracks & causes pieces to break off
when new rocks are made from magma that has cooled off
23
Which type of fossil preservation is this?
original remains
permineralized remains
trace fossil
carbon film
24
Which of the following is not a fossil?
A trilobite in sandstone
Footprints in snow
A petrified tree trunk
A fern imprint in shale
25
What is an example of a trace fossil?
Skull
Eggshell
Bones
Petrified wood
26
Put the fossils in order from youngest to oldest
C, B, A
C, A, B
A, B, C
A, C, B
27
Fossils can be destroyed by...
rock cycle processes
weathering
they cannot be destroyed
both weathering and rock cycle processes
