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Rocks Adn Fossils 2
Test Description: Earth Science ch 6
Instructions: Answer all questions to get your test result.
1) What did marine fossils discover on a Canadian mountaintop tell scientists?
A
The rocks had probably eroded
B
Marine species once lived on land
C
The rocks had probably been moved
D
The rocks on the mountaintop were once below the ocean's surface
2) Which of the following do geologists used to date rock layers?
A
index fossils
B
trace fossils
C
casts
D
molds
3) What is tilting?
A
a form of erosion
B
slanting of rock layers
C
an intrusion
D
folding of rock layers
4) Which word best describes the geologic column?
A
ideal
B
complete
C
ralative
D
absolute
5) Which era ended with the largest mass extinction in Earth's history?
A
Cenozoic
B
Proterozoic
C
Mesozoic
D
Paleozoic
6) What do scientists think may have caused dinosaurs to become extinct?
A
competition between dinosaurs
B
climate change
C
competition from mammals
D
disappearance of prey
7) What does a scientist need to know to figure out the absolute age of a rock?
A
the rate of decay for all elements in the rock
B
the rate of decays of the rocks half-life
C
the half-life of a radioactive sample
D
the rate of decay for radioactive element in the rock
8) How do geologists use the geologic time scale?
A
to predict future extinction events
B
to date rock layers
C
to divide Earth's history into managable parts
D
to record catastrophes
9) What can animal tracks tell about the animal that left them?
A
what the animal ate
B
its mating habits
C
its color
D
how big it was
10) What can scientist learn from studying the relationships between fossils?
A
how life has changed
B
how paleontology has changed
C
how the geologic column has changed
D
how science has changed
*select an answer for all questions
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