A scientific hypothesis:
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A) is similar to a theory because it is based on numerous experim
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ents ./
B) is really just an educated guess at the answer to a question
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C) can never be the true answer to a scientific question
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D) can never become a scientific fact - correct answer ✔ ✔
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B) is really just an educated guess at the answer to a question
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Which of the following is the correct sequence of steps, from begi
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nning to end, in the Scientific Method:
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A) Conclusions - controlled experiment - observations -
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hypothesis
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B) Observations - controlled experiment - inferences -
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conclusions
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C) Conclusions - observations -
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alter observations to fit conclusions - future research and awards
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,D) Observations - hypothesis - controlled experiment -
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conclusions - correct answer ✔ ✔ D) Observations -
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hypothesis - controlled experiment - conclusions
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Which statement is false? ./ ./ ./
A) In a valid controlled experiement variables are kept constant
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B) Historical evidence does not meet the primary requirement of
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scientific method ./ ./
C) Examples of quantitative data include diameter of a tree
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D) Independent variables are variables that are manipulated -
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correct answer ✔ ✔
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B) Historical evidence does not meets the primary requirement
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of scientific method
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If A increases and causes an effect B, which in turn causes an incr
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ease in A, is that
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A) Negative Feedback
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B) Positive Feedback
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,C) Not a Feedback - correct answer ✔ ✔
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B) Positive Feedback ./ ./
Consider a situation where increased solar radiation reaches the E
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arth's surface and raises the ocean temperature. This results in mo
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re evaporation, which produces more clouds. The increased cloud
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cover reduces the amount of solar radiation that reaches the surfa
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ce of the Earth. This is an example of:
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A) Positive Feedback
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B) Negative Feedback
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C) Not a feedback
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D) The Greenhouse effect - correct answer ✔ ✔
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B) Negative Feedback ./ ./
Nitrogen has a very high concentration in the atmosphere and is c
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ycled very slowly into and out of the atmosphere. Water vapor ha
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s a lower concentration in the atmosphere and is cycled quite rapi
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dly. Which statement is true:
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A) Nitrogen has a higher residence time in the atmosphere than w
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ater vapor ./ ./
, B) Nitrogen has a lower residence time in the atmosphere than wa
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ter vapor
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C) Nitrogen and water vapor have roughly the same residence tim
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e in the atmosphere - correct answer ✔ ✔
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A) Nitrogen has a higher residence time in the atmosphere than
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water vapor ./
Owls and hawks prey on similar animals, but hawks hunt by day a
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nd owls hunt at night. Is this an example of:
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A) Exploitation competition
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B) Coevolution
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C) Interference competition
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D) Niche Differentiation - correct answer ✔ ✔
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D) Niche Differentiation
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The relationship between hermatypic corals and zooxanthellae is
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an example of
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A) Parasitism
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B) Commensalism
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