Exam (elaborations)
AICE marine science AS Level Exam review paper 1, 2 Questions and Answers
- Course
- Institution
AICE marine science AS Level Exam review paper 1, 2 Questions and Answers
[Show more]
Content preview
AICE marine science AS Level Examreview paper 1, 2 Questions and
Answers
scientific method - 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 - 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 - 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 - 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 - Answer --rigorous
testing
-repeated testing by many/other scientist
-scientist get similar results but with the same conclusions no exception
, symbiosis - 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 - Answer -or food web represent: transfer engery and biomass
-do not use the words "eats," instead, use consumes
predator/prey relationships - Answer -remember that the number of predators lags
behind the number of prey organisms
succession - Answer -tube worms, remember =, tevnia first, the they are replaced by
riftia
extreme and unstable - 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 - 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 - 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.
high biodiversity - Answer -areas of high biodiversity have a narrow niches because if
niches overlap, individuals will die out.
narrow niches=reduces overlap=reduces competition
niche - Answer -an organisms role in its environment
-generalized- an organisms having a wide range of food and habitat
-specialized- an organism that has a narrow food requirement and lives in a specific
habitat
photosynthesis - Answer -is the process by which sunlight energy is used to
synthesize/make/convert to glucose by producer
chemosynthesis - Answer -is the process by which chemical energy is used to
synthesize/make/convert to glucose by bacteria
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now