Group Oral Presentation for Chapter 23 (Air)

Guidelines for Group Oral Presentation (02/11/2010 - 04/11/2010)

Grouping

• Form a group of 4 and assign a group leader. Group leader is to post the names of the group members and the sub-topic chosen in the comments section of this post by 28/10/2010 (Thursday), 12pm (Note: There will be one group with 5 members).

Group Work

• Select one sub-topic from the list given below.(Maximum 2 groups presenting on the same topic, based on first-come-first serve basis)
  
• Research on the sub-topic. You can use various resources e.g. the textbook, other reference books, online websites (make sure the information come from reliable sources).
• You may also want to research on interesting facts or real life applications.
  
• Group leader is to coordinate and allocate the tasks among the members.
  

Group Oral Presentation

1. Prepare a 10 mins oral presentation using powerpoint or keynote on your selected sub-topic. (Except: The group of 5 members will need to prepare a 15mins presentation excluding Q&A).
   
2. Each group will be given a maximum of 15 mins (including 5mins for Q&A).
3. Every group member must speak.
4. Remember to start your presentation by giving a brief background on the topic you have chosen and end your presentation with a proper conclusion/short discussion.
5. Date of presentation: 02/11/2010, 03/11/2010, 04/11/2010. Three groups will be presenting for each lesson.
   

Grading

• Your oral presentation will be graded based on content, organization and graphics, creativity, length of presentation and presentation skills.
  
• The grade given MAY be used as a class test component in Sec 4.
• Group leader is to submit a soft copy of the presentation slides to my email after your group's presentation for grading lim_jia_jia@mshs.edu.sg
  

Sub-topics on Air (chapter 23)

1) Carbon monoxide - state the sources; describe the reactions used in possible solutions to the problems arising from it; discuss some of the effects of this pollutant on health and on the environment

2) Sulfur dioxide – state the sources; describe the reactions used in possible solutions to the problems arising from it; discuss some of the effects of this pollutant on health and on the environment

3) Nitrogen oxides - state the sources; describe the reactions used in possible solutions to the problems arising from it; discuss some of the effects of this pollutant on health and on the environment

4) Ozone – briefly how it is formed; discuss the importance of the ozone layer; how layer is depleted; problems involved with the depletion of the ozone; possible solutions

5) Greenhouse gases – what they are; source of these gases; discuss the possible consequences of an increase in global warming; include some examples if possible

6) Carbon cycle – describe in simple terms, to include
-the processes of combustion, respiration and photosynthesis
-how carbon cycle regulates the amount of carbon dioxide in the atmosphere

7) ‘Acid rain’ – its formation and effects on respiration and buildings; give real life examples.

8) Air quality in Singapore- discuss with relevant data; green efforts/initiatives put in locally to combat air pollution

9) Many scientists have concluded that excess greenhouse gases cause global warming but others disagree. Collect information on the two sides to this argument :
Side A : global warming is real and requires immediate attention and action
Side B : scientists have not proven that global warming is serious and action
is not needed

10) Air – composition of clean air; why it is a mixture; separation of liquid air in the industries and its application.