2017 Mod8 Flashcards
Define the following terms:
A. Index fossils
Fossils that are assumed to represent a certain period in earth’s past
B. Geological column
A theoretical picture in which layers of rock from around the world are meshed together into a single unbroken record of earth’s past
C. The THEORY of evolution
A theory stating that all life on this earth has one (or a few) common ancestor(s) that existed a long time ago
How are Index fossils used by Uniformitarian geologists
To “know” what time. The rock came from
Explain, in your own words,how the geological column is constructed
By layers of sediment being laid down
Is it possible to go somewhere in the world and see all major layers of the geological column and it’s fossils in one geological formation
Yes
According to the Uniformitarian view, which creatures lived on the earth first: trilobites or fish?
Trilobites
If a paleontologist finds only fossil algae in a layer of rock, roughly how old does the paleontologist think the rocks are
550 million years old or older
A geological formation with only two layers of rock is studied. One has fossils of mammals only, and the other has fossils of fish only. According to the uniformitarian assumptions, which layer should be on the bottom and which should be on the top
Top = mammals Bottom = fish
Why is the geological column considered evidence for evolution?
They seem to indicate that simple animals came first
Why is the geological column not really evident for evolution
Some layers are a mix that “should not be”
What do the data from Mount Saint Helens tell us about the time it takes to form stratified rocks?
Not long at all
If you see a canyon with a river flowing at the bottom of it,should you assumed that the river eroded the canyon?
No
On a geological scale, was the Mount St. Helens eruption a major catastrophe? What does that tell you about the kinds of geological formations it could be formed in a major catastrophe
No
a lot bigger
What did the Mount St. Helens eruption have that a major flood would also have?
Mud