ENV SP case studies
ENV SP · Put your knowledge to work in context.
This independent study page provides practice for ENV SP. Its editorial learning areas include Integrated subject foundations, assessment and evidence. The questions develop subject knowledge and application through worked reasoning, distinctions between competing answers, and practical scenarios. Study the relevant guide before attempting a mixed set, then explain the evidence or calculation that supports each answer. Topics on this exam: Integrated subject foundations, assessment and evidence. The ENV SP case studies are 4 cases and about 622 words.
1A pond changes after rainfall
A fictional monitoring team records unusually cloudy water in a pond after heavy rainfall and later finds low dissolved oxygen in several samples. Nearby land includes cultivated fields and a small settlement, but no complete source survey has been conducted. A student says the observation proves one farm caused every effect, while another says rainfall cannot be relevant because it is natural. The team has permission to review existing records and design further monitoring, not to release substances or disturb protected habitat.
155 words, under 1 min2A supplied energy-transfer assumption
A fictional ecology exercise gives annual net primary production of 12000 energy units for a defined patch and instructs learners to assume ten-percent transfer between each consecutive trophic level. The exercise is a simplified model rather than a field measurement of every feeding relationship. A learner calculates energy available at the next two levels and then claims that every real food web must have exactly those efficiencies. Another learner treats energy as if it cycles back unchanged in the same way as nitrogen atoms.
153 words, under 1 min3An aquifer storage account
A fictional annual water budget defines an aquifer area of 500 square kilometers and recharge depth of 45 millimeters over that area. Pumping removes 40 million cubic meters during the same year. For this exercise, other inflows and outflows are set to zero; these are assumptions, not claims about an actual aquifer. The team is asked to calculate the change in stored water and discuss a proposed prediction of groundwater-level decline.
161 words, under 1 min4Comparing two electricity-use scenarios
A fictional facilities exercise compares a baseline annual electricity use of 100000 kilowatt-hours with a proposed annual use of 80000 kilowatt-hours for the same stated service. It supplies an emissions factor of 0.4 kilograms per kilowatt-hour for both scenarios and asks only for modeled electricity-related emissions. The exercise does not include manufacturing, disposal, changed usage or any future change in the grid factor. A manager claims the result proves zero environmental impact across the entire life cycle.
153 words, under 1 min