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AICE marine science AS Level Exam review paper questions with correct answers
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AICE marine science AS Level Exam review paper questions with correct answers
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AICE marine science AS Level Exam review paperquestions with correct answers
scientific method Correct Answer-1. for valid experiments, data should
be collected numerous times (the more times, the more accurate)
2. only one variable (independent) should be changed in an experiment.
All others should be controlled. The deponent variable is dependent
upon what you changed-it will be what you are measuring in n
experiment
3. quantitative results- numbers (qualitative=descriptive words)
outlining/designing an experiment Correct Answer--state amount of
containers e.g. 5 tanks of each
-state constants (at minimum 3) (light, salinity, amount of water, how
often results are calculated, amount f exposure/days etc.)
-what is the amount of independent variables used? pick a quantity
suitable for the experiment appropriate to the experiment
-state the duration of the entire experiment
-state the calculating results. most common is simple counting
-state repeat experimentation and calculate mean/average from all trials
describing results of an experiment Correct Answer--state the most with
reference to data
-state the least with reference to data
-manipulate data by finding range
,creating or working with graphs Correct Answer--use the entire graph
-correctly label the x and y axis
-use correct intervals. do not use breaks to begin at certain number. each
interval is equally spaced. use appropriate scale the divide the total
number of spaces on the graph by the range. this will give you your
interval.
-when constructing a graph, make sure your scale is appropriate to show
a relationship-you may need to have values on the axis to the left and to
the right
-plot all points correctly
-line of best fit
explain what would be needed to turn an experiment into a theory
Correct Answer--rigorous testing
-repeated testing by many/other scientist
-scientist get similar results but with the same conclusions no exception
symbiosis Correct Answer-remember that aice looks at symbiosis and
mutualism one in the same. it is a close relationship between 2 different
species where both benefit. make sure you explain what both are
getting/giving. examples: coral and zooxanthellae; tube worms and
chemo. bacteria
arrows in a food chain Correct Answer-or food web represent: transfer
engery and biomass
-do not use the words "eats," instead, use consumes
, predator/prey relationships Correct Answer-remember that the number
of predators lags behind the number of prey organisms
succession Correct Answer-tube worms, remember =, tevnia first, the
they are replaced by riftia
extreme and unstable Correct Answer-explain why extreme and unstable
environments have low biodiversity
first, define terms: extreme, unstable, and biodiversity
second, give examples of each environment with organism's adaptation
to that environment
extreme environments Correct Answer-have a low ph, high temperature,
low oxygen and high salinity
-extreme environments have limited resources
-hydrothermal vents are an extreme environment
-example of an organism at a hydrothermal vent is chemosynthetic
bacteria
unstable environments Correct Answer--sandy environments where
there is sand slippage; organisms are easily washed away
-organsims burrow to avoid being washed/swept away. they are also
exposed to air, so desiccation can occur. organisms must adapt.
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