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34 Cards in this Set

  • Front
  • Back
What caused the massive declines in seal and sea lion populations in 1997-1998?
El Nino
Which of the following gases is located in the Earth's upper atmosphere and is important in screening out dangerous ultraviolet radiation?
Ozone (O3)
What is the name of the atmospheric layer that is closest to the Earth's surface?
Thinning of the ozone layer is most pronounced over which of the following areas?
Which of the following latitudes generally have dry climates?
30 and 90 degrees (poles)
In which of the following months is the Earth's southern hemisphere most tilted towards the Sun?
Which of the following describes what happens during a thermal inversion?
Air pollutants accumulate in cool surface air, which is trapped underneath an overlying layer of warm air.
What influences the movement of ocean currents?
presence of land masses, shapes of ocean basins, Earth's rotation.
What best describes rain shadow?
Prevailing winds move over mountains, lose moisture, and areas on the leeward side of the mountains are arid.
What forests occurs at the highest elevations on western North American mountain ranges?
montane coniferous
What exists between the tropical forests and hot deserts of Africa, South America and Australia?
What is the name of the zone that extends from the shore of a lake to the water depth where rooted aquatic plants stop growing?
During which season are thermoclines dominant in temperate lakes?
Of the ocean floor zones, which of the following is deepest?
What is primarily responsible for the westward movement of ocean surface waters along the west coasts of North and South America, which allows for the upwelling of colder and deeper waters?
the Earth's rotation
describes events that occur BETWEEN ENSOs?
Equatorial trade winds blow from east to west.
describes what happens during El Niño years?
Warm waters accumulate from California to Peru and prevent nutrient rich bottom waters from upwelling and supporting marine food webs.
is significantly responsible for destroying the ozone layer?
is primarily responsible for photochemical smog?
nitrogen dioxide
Which of the following energy sources is non-renewable?
a. solar
b. wind
c. coal
d. hydrogen
c. coal
air pollutant most responsible for acid rain?
sulfur dioxides
the approximate pH of unpolluted rainwater?
a major source of sulfur dioxide pollutants?
coal-fired power plants
What happens to seawater when it is heated?
It expands.
Why does London, England generally have milder winters than expected?
The North Atlantic current picks up warm water from the Gulf Stream.
major cause of desertification in Africa?
overgrazing by cattle
permanently frozen soils
Where is tundra found?
At very high elevation and areas with low moisture.
the following contaminant often cause eutrophication?
he name of a partially enclosed coastal region where seawater mixes with freshwater from rivers, streams, and runoff?
an estuary
environments is most favorable for the growth of coral reefs?
clear and warm marine waters
true about marine snow?
Marine snows are tiny bits of organic matter that are the foundation of the food web in deep ocean waters where photosynthesis is not possible.
Which of the following was responsible for the 1997-1998 cholera outbreaks in Peru?
ncreases in ocean water temperatures because of an El Niño (ENSO event)
Which of the following causes cholera?
a bacterium of the genus Vibrio