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APES SEMESTER #1 EXAM QUESTIONS AND ANSWERS
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APES SEMESTER #1 EXAM QUESTIONS AND ANSWERS
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APES SEMESTER #1 EXAM QUESTIONSAND ANSWERS
Ecology - answer-the study of living things
Environmental science - answer-the study of how we interact with our environment
Positive feedback - answer-situation in which change in certain direction provides info
that causes system to change further in same direction (giving birth)
Negative feedback loop - answer-change in certain direction that provides system to
change in less in that direction (ac)
Homeostasis - answer-maintenance of favorable internal conditions
Synergy - answer-result when two people work together to accomplish a task
70/percent of growth rate - answer-equation for doubling time
(births+immigration) - (death+emigration) - answer-growth rate formula
China and india - answer-2 countries with largest populations
Hunting and gathering nomads - answer-1st agricultural communities
Kinetic energy - answer-energy that matter has because of its mass and speed or
velocity (ex: heat)
Potential energy - answer-energy stored in an object because of the position or position
of its parts (rock in hand)
1st law of thermodynamics - answer-law that states "in all physical and chemical
changes energy is neither created nor destroyed but may be converted to different
forms of ea." (ex:nature)
1st law of thermodynamics - answer-law that states "whenever energy is changed from
1 form to another they end up with less usable energy than at the start" (ex: using
battery until its dead)
Energy cycles, matter flows in one direction - answer-dif between energy and matter
Nitrogen cycle - answer-nutrient cycle that has no atmospheric component
, Percolation - answer-passage of a liquid through the spaces of a porous material such
as soil
Transpiration - answer-water is absorbed by root systems of plants, moves up through
plants, posses through pores and leaves or other parts, evaporated into the atmosphere
as water vapor
Water table - answer-upper surface of zone of saturation, which all available pores in
soil and rock in earth's crust are filled with water
Cellular respiration - answer-process used to convert biochemical energy from nutrients
into atp then release waste
Combustion - answer-occurs when any organic material is reacted (burned) in the
presence of oxygen to give off products of carbon dioxide and water
Decomposition - answer-process by which organic material is broken down into simpler
forms of matter
Nitrogen fixation - answer-conversion of atmospheric nitrogen gas into forms useful to
plants by lightning, bacteria, etc-> part of nitrogen cycle
Assimilation - answer-absorption of nitrogen into plants and animals
Nitrification - answer-the oxidation of ammonium compounds in dead organic material
into nitrates and nitrites by soil bacteria (making nitrogen available to plants)
Ammonification - answer-process in a nutrient cycle where decay breaks down dead
organic matter to release ammonia (nh3) into the soil.
Denitrification - answer-process in which fixed nitrogen compounds are converted back
into nitrogen gas and returned to the atmosphere
Linear growth - answer-2,4,6,8,10
Exponential growth - answer-2,4,8,16,32,64
Logistic growth - answer-growth pattern in which a population's growth rate slows or
stops following a period of exponential growth
Commensalism - answer-interaction between organisms of different species; 1 benefits
while the other is neither hurt nor harmed
Primary consumer - answer-an organism that eats producers
Secondary consumer - answer-an organism that eats primary consumers
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