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Geologic Time and Superposition Flashcards | StudBud
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Geologic Time and Superposition
Geologic Time and Superposition
13 terms
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earth science, geologic time and dating rocks
Flashcards
13 cards
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Questions
13
Answers
1
Next, the sea retreated and the region became desert. Which layer is sandstone?
M
O
N
none of them
2
What is an advantage of radioactive dating as opposed to relative dating?
It uses index fossils to find the age of fossils
It lets scientists compare the ages of rocks and fossils
It gives a more precise age
It shows that the oldest layer is always on top
3
Finally, a volcano erupted lava, which then quickly cooled. Which layer is basalt (igneous)?
all of them
O
N
M
4
What creates islands?
Divergent Boundaries
Subduction Zones
Oceanic Ridges
Faults
5
The place where the people are standing used to be an ocean. True or false?
False because there is coal
True because there is shale and limestone
True because there is granite
I need more information, the picture doesn't give evidence
6
What causes magma to rise?
cold, more dense
hot, less dense
cold, less dense
hot, more dense
7
What plate boundary creates the mid-ocean ridge?
none of them
Convergent
Transform
Divergent
8
E is older than D
False
True
9
What caused the layers to not lie flat?
intrusion
tilting
fault
erosion
10
There are marine fossils found in the mountains in Italy. How do you think they got there?
They were carried there by people
A huge tsunami washed them to the top of the mountain
The marine organisms climbed the mountain
It used to be an ocean before there was uplift
11
D is younger than A
False
True
12
First a large sea covered the area, allowing coral reefs to develop. Which layer is limestone?
M
none of them
O
N
13
Then, stresses caused the existing rock layers to crack and break. Where is the fault?
M, N, and O
N and O
Only O
Only N
