Essential Biology 5.2 The Greenhouse Effect
Due Date:
Student Name:
Candidate Number: 002171-xxx
Blog resource: http://tinyurl.com/3a4g5ez
Cite all sources using the CSE method (or ISO 690 Numerical in Word). The first example has been done for you.
Complete the self-assessment rubric before submitting to Moodle. Avoid printing this if possible.
1.
A
D
Annotate the diagram to show the carbon cycle and processes involved.
Respiration (1)
decomposition
B
E
photosynthesis
excretion
C
Fossil fuel emissions
2. Outline some of the methods used to measure or estimate atmospheric carbon dioxide.
Recent history: by looking at the trends in atmospheric gases and collecting the data.by
using C02 sensors.
Geological history: one of the methods is by taking ice samples.
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology 5.2 The Greenhouse Effect
Due Date:
Student Name:
Candidate Number: 002171-xxx
3. The topic of increasing carbon dioxide levels in the atmosphere has been the source of intense
debate with regard to climate change in recent years. This graph shows the famous ‘Keeling
Curve’ from Mauna Loa laboratory in Hawaii. Find out more here:
http://earthguide.ucsd.edu/globalchange/keeling_curve/01.html
a. Describe the overall trend shown in the graph.
Overall we can see the amount of c02 in the air is constantly fluctuating getting higher in the summer
and lower in the winter but generally has been rising.
b. Explain the annual fluctuations in CO2 levels.
This happens because during the winter many plants lose their leaves and much less C02
is released. Whereas in the summer there are many plants with leaves and a lot of C02 is produced.
c. Suggest one human impact and one natural cause that could have led to the overall trend
shown in the graph:
Anthropogenic: one cause could be the production of facrories and cars that produce a
lot of C02. Also deforestation can cause this because
Natural: a natural cause could be volcanic eruptions, mainly pyroclastic which produce
large amounts of C02 and C0.
4. Identify three greenhouse gases other than carbon dioxide. 3 other gasses are N02, Methane
and H20(gas).
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology 5.2 The Greenhouse Effect
Due Date:
Student Name:
Candidate Number: 002171-xxx
5. Explain the greenhouse effect with the aid of a diagram. Include short-wave and long-wave
radiation.
The atmosphere keeps all the gasses inside the earth while some heat leaves but some is reflected. The
short wave radiation refer to the light that passes through the atmosphere and then when reached the
earth converts to long wave infrared radiation. This warms the earth.
6. Explain how increased atmospheric levels of greenhouse gases lead to an enhanced greenhouse
effect.
Due to human activities there have been increasing the levels of carbon dioxide and other
'greenhouse gases' such as methane and oxides of nitrogen in the atmosphere. That this
may lead to increased global temperatures and climate change.
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology 5.2 The Greenhouse Effect
Due Date:
Student Name:
Candidate Number: 002171-xxx
7. Outline some of the possible consequences of a global temperature rise on arctic ecosystems.
Ice coverage:
Climate changes:
Niches: specific places where organisms live in
Plant distributions:
Animal populations:
8. Outline the precautionary principle. The principle states that if the effects of human-induced
change would be large, perhaps catastrophic, those responsible for the change must
prove that it will not do harm before proceeding.
9. Give two other examples of the precautionary principle in effect in Biology or Medicine.
Two more examples are : burden of proof and occams razor.
10. Evaluate the precautionary principle as a justification for taking strong action in response to the
threats posed by the enhanced greenhouse effect. What are some of the steps that we could
take? This video might help: http://www.youtube.com/watch?v=mF_anaVcCXg
Take no action
True
Global climate
destabilization is…
Take significant action
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Due Date:
Student Name:
Candidate Number: 002171-xxx
False
Essential Biology 5.2 The Greenhouse Effect
Conclusion:
Works Cited
1. Taylor, Stephen. 5.2 Greenhouse Effect (presentation). Science Video Resources. [Online] Septmber
2009. http://sciencevideos.wordpress.com/bis-ib-diploma-programme-biology/05-ecology-andevolution/the-greenhouse-effect/.
2. Allott, Andrew. IB Study Guide: Biology for the IB Diploma. s.l. : Oxford University Press, 2007. 978-019-915143-1.
Self Assessment:
Essential Biology
Criterion
Presentation &
Organisation
Academic
Honesty
Objective 1
understanding
Objective 2
understanding
Objective3
understanding
Logic, notation,
mathematical
working
Further research
Assessment
Complete (2)
Partially complete (1)
NA
Complete and neat. All command terms
highlighted, tables and diagrams well presented.
Self
Sources cited using the CSE (ISO 690 numerical)
method, with Works Cited section complete and
correct.
All answers for the following command terms
Most answers for the following command terms
correct:
correct:
Define
Draw
Label
List
Measure State
Most answers for the following command terms
All answers for the following command terms correct:
correct:
Annotate Apply
Calculate Describe Distinguish Estimate Identify
Outline
Most answers for the following command terms
All answers for the following command terms correct:
correct:
Analyse Comment Compare Construct Deduce Derive Design Determine Discuss
Evaluate
Explain Predict
Show Solve
Sketch Suggest
Answers are presented in a logical and concise
manner. SI units used most times, with correct
NA
unit symbols and definitions of terms. All
mathematical working shown.
Evidence is apparent of research and reading
beyond the textbook and presentations to find
NA
correct answers to challenging questions. If any
Stephen Taylor
NA
Bandung International School
http://sciencevideos.wordpress.com
MrT
Essential Biology 5.2 The Greenhouse Effect
Due Date:
Student Name:
Candidate Number: 002171-xxx
questions are unanswered, this criterion scores
zero.
Total (max 10):
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
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