Is dense and composed of intensely hot metal such as iron
What is the core?
100
Description of the physical conditions in the atmosphere over short time scales
What is weather?
100
The natural process by which water is purified and made fresh through evaporation and precipitation and provides all the freshwater available for life
What is the hydrologic cycle?
100
Conversion of productive land to desert
What is desertification?
100
Middle name of Ms. Burks
What is Elizabeth?
200
Are huge convection currents in the mantle that are thought to break the overlying crust into a mosaic of huge blocks is
What are tectonic plates
200
When cooler air displaces warmer air which are accompanied by violent surface winds and destructive storms
What is a cold front?
200
The next largest reservoir of fresh water besides glaciers
What is groundwater?
200
Soil layer where there is leaf litter, most soil organisms and partially decomposed organisms
What is the O Horizon?
200
The 33rd element that was topic of a Skype interview in class
What is arsenic?
300
Pre-existing rocks that are modified by heat, pressure, and chemical agents to create new rocks
What are metamorphic rocks?
300
The apparent curvature of the winds which produces steady, reliable wind patterns, such as the trade winds
What is the Coriolis effect?
300
Occurs when the demand for water exceeds the available amount or when poor quality restricts its use.
What is water scarcity?
300
The amount of sand, silt, and clay in the soil. Helps determine whether rainfall drains away quickly or ponds up and drowns plants
What is soil texture?
300
Movement of members away from a population
What is emigration (pronounced iiiimigration)?
400
A naturally occurring, inorganic, solid element or compound with a definite chemical composition and a regular internal crystal structure
What is a mineral?
400
A very large pool of warm water that moves back and forth across the North Pacific every 30 years or so
What is the Pacific Decadal Oscillation?
400
Porous layers of sand, gravel, or rock lying below the water table
What are aquifers?
400
These soils have a thick, organic-rich A-Horizon which developed when this land was covered by prairie grasslands.
What are mollisols?
400
Increased by 300% over last year in the U.S.
500
Where gravity constantly pulls downward on every material everywhere on earth
What is mass wasting or mass movement?
500
Where there are periodic shifts in the earth’s orbit and tilt
and can change climate
What are the Milankovitch cycles?
500
Where precipitation percolates through the soil and into fractures and space of permeable rocks
What is infiltration?
500
Planting different crops in alternating strips along land contours to prevent erosion
What is strip farming?
500
Former chairman of Halliburton (a natural gas company) in a documentary. When this person died, a party would be held in celebration not in favor of him.