Students will need to purchase small solar panels and utilize data loggers to measure the amount of electrical current produced over time using the variables of spectrum and filters to simulate the global warming issue. Relating to air pollution and cloud cover on surface heating.
In this investigation, students will take a live sample of bacteria (algae) found in water samples. Some bacteria is healthy but too much will lead to eutrophic water bodies. Your investigation will observe the growth of algae within a controlled body of water using an independent variable such as pH, temperature, UV spectrum, salinity or nutrient content. Students may study the dissolved oxygen over time or turbidity over time. A proper discussion will include the extension into Hong Kong water pollution.
Students participating in this investigation will research particulate matter investigate the amount of particulate matter in the air at certain locations. Students may hypothesis the areas that have the most or least particulate matter. Students will measure the air particulate matter using either petri dishes with Vaseline medium or use the vacuum boxes. Each method will allow for the measurement of particulate matter. Students will need to measure another variable that they assume will be the cause of the particulate matter and controlling external variables such as weather. Students can also compare their data to the Hong Kong observatories secondary data in their discussion.
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