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