Glacial Features
Rivers
Global Climate Change
The Dust Bowl
Sea Level Rise
100
this ice deposited sediment has very poor sorting
What is glacial till?
100
Most deadly and common natural disaster in the United States
What is a flood?
100
Our current Geologic Era marked by a cooling climate
What is the 'Cenozoic Era'
100
The ratio of Precipitation to Potential Evaporation
What is an aridity index?
100
Circulation of water in the oceans globally, redistributing earth's heat from the equator to the poles
What is thermohaline circulation?
200
A linear ridge of unsorted sediments
What is a morraine?
200
What people are most likely to be doing when they die in a flood
What is driving?
200
Maximum amount of land covered by ice about 20,000 years ago
What is 30%?
200
Native vegetation covering most of the Dust Bowl Region
What are Prairie Grasses?
200
A cause of sea-level rise from just temperature
What is thermal expansion?
300
What is a roche moutonnée?
300
Geologic term for the volume of water flowing in a stream per unit time
What is discharge?
300
The strongest of the 3 orbital variations impacting climate
What is eccentricity?
300
Premoninant crop planted by farmers in the Dust Bowl Region during the early 1900s
What is wheat?
300
The largest contributor to sea-level rise today
What is melting alpine (mountain) glaciers?
400
A linear ridge of well-sorted gravel
What is an esker?
400
Type of erosion evident here
400
The concentration of carbon dioxide in the atmosphere during a glacial maximum
What is 180 ppm?
400
Analysis used to reconstruct drought history over the last 1000 years
What are tree rings?
400
A process causing sea-level to drop in some parts of north america
What is uplift?
500
A large boulder sitting on bedrock of a different type
What is a glacial erratic
500
Term for the lowest point rivers can cut down to
What is base-level (sea-level)
500
The concentration of carbon dioxide in the atmosphere during the last interglacial about 120,000 years ago
What is 280 ppm?
500
A condition in the Pacific Ocean when the warm water is near the western edge, causing wetter conditions in the Great Plains
What is El Nino
500
Region of the US with the worst sea-level problems
What is Louisiana (New Orleans, Gulf of Mexico)