PCC Watson Note Quiz 4 Questions & Answers
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Terms in this set (94)
The model of nature Neo-catastrophism
changed from
uniformitarianism to _______
Where are the US 200 miles east of Seattle, Washington
Scablands located?
How do geologists -They look at how similar landforms were created
normally determine how -By ordinary processes
geologic formations
develop?
Who proposed that the J Harlan Bretz
scablands formed rapidly?
-Defied all scientific convention
Why was J Harlan Bretz'
-Said there was an overnight catastrophe
proposal rejected?
-Sounded too much like a Biblical flood
What structure collapsed -A ½ mile high glacier that had dammed a lake
enabling the flood of the
scablands?
What formed the potholes -A vortex of water bubbles that explode
at the scablands?
Rapid formation and collapse of vapor pockets in a
Cavitation definition
flowing liquid in regions of very low pressure
, Scale-independent Natural processes act uniformly regardless of scale
definition
What is the "notion that Neocatastophism
rare, high-magnitude
events have played an
important role in
landscape evolution."
· Same as catastrophes today, only more intense, but
Characteristics of dominated by uniformitarianism
Neocatastophism · The foundation of geology is uniformitarianism
· Nothing supernatural
The secular foundation of uniformitarianism
geology is _________
· Process of estimating the age of the rocks from the
What is radiometric
decay of their radioactive isotopes."
dating?
-measured in half-lives
How is radiometric dating In half lives (amount of time it takes for ½ the parent
measured? element to change into the daughter element)
Two types of radiometric 1. Hot rocks that cool
dating 2.Fossils
Characteristics of hot -Igneous rock
rocks that cool -Metamorphic rock
(radiometric dating) -Assumed to have only one parent element
-C-14 dating (radiocarbon dating)
-Do not measure daughter element but compare C-14
to C-12
Characteristics of fossils
-C-14 half-life is 5,730 years
(radiometric dating)
-Only used to date material assumed to be less than
80,000 years old (Any older, you can't find any C-14 to
measure in the specimen)
Hot rocks that cool are parent element
assumed to have one
_________ __________
Save
Terms in this set (94)
The model of nature Neo-catastrophism
changed from
uniformitarianism to _______
Where are the US 200 miles east of Seattle, Washington
Scablands located?
How do geologists -They look at how similar landforms were created
normally determine how -By ordinary processes
geologic formations
develop?
Who proposed that the J Harlan Bretz
scablands formed rapidly?
-Defied all scientific convention
Why was J Harlan Bretz'
-Said there was an overnight catastrophe
proposal rejected?
-Sounded too much like a Biblical flood
What structure collapsed -A ½ mile high glacier that had dammed a lake
enabling the flood of the
scablands?
What formed the potholes -A vortex of water bubbles that explode
at the scablands?
Rapid formation and collapse of vapor pockets in a
Cavitation definition
flowing liquid in regions of very low pressure
, Scale-independent Natural processes act uniformly regardless of scale
definition
What is the "notion that Neocatastophism
rare, high-magnitude
events have played an
important role in
landscape evolution."
· Same as catastrophes today, only more intense, but
Characteristics of dominated by uniformitarianism
Neocatastophism · The foundation of geology is uniformitarianism
· Nothing supernatural
The secular foundation of uniformitarianism
geology is _________
· Process of estimating the age of the rocks from the
What is radiometric
decay of their radioactive isotopes."
dating?
-measured in half-lives
How is radiometric dating In half lives (amount of time it takes for ½ the parent
measured? element to change into the daughter element)
Two types of radiometric 1. Hot rocks that cool
dating 2.Fossils
Characteristics of hot -Igneous rock
rocks that cool -Metamorphic rock
(radiometric dating) -Assumed to have only one parent element
-C-14 dating (radiocarbon dating)
-Do not measure daughter element but compare C-14
to C-12
Characteristics of fossils
-C-14 half-life is 5,730 years
(radiometric dating)
-Only used to date material assumed to be less than
80,000 years old (Any older, you can't find any C-14 to
measure in the specimen)
Hot rocks that cool are parent element
assumed to have one
_________ __________
