Uploaded on 2016-06-20 by Hugh Ebdy

During a recent holiday, we (my family and I) briefly found ourselves in New York, in which time we managed a quick excursion to Central Park. I thought therefore Central Park as an area would be as interesting a place as any to discuss stocks and flows. 1. Identify The weather at the time was hot – and I mean baking; a large FLOW of radiation energy from the sun – to the point where various items of clothing were being removed by people in the park (a FLOW of clothing from a STOCK of worn items). Though what struck me most was the rapidly depleting STOCK of cold ice-cream and drinks which were being consumed (becoming a FLOW of energy into the body) by visitors. Visitors (a FLOW of people in and out of the park) who were willing to pay very high prices (a FLOW of money) for the pleasure of something cold – though others simply filled bottles at the various drinking fountains (a FLOW of free water). At one point we passed through Central Park Zoo where a STOCK of various animals were kept for visitors' amusement. 2. Describe I believe the above answer already outlines this. 3. Imagine FLOW of water from drinking fountains: by providing visitors with a FLOW of water (coming originally from a reservoir STOCK), it prevents dehydration during the warmest days of the year thus keeping those in the park safe. FLOW of visitors: the FLOW of visitors to the park (coming from a STOCK of humans – those with the potential to visit the park) bring with them a STOCK of money which they spend (FLOW) which is of benefit to the local economy. FLOW of radiation energy from the sun: people are able to capture such energy using either solar PV panels or solar thermal panels creating a FLOW of energy into either electricity or warmed water. This has the obvious benefit that people rely less on more tradition fossil fuel reliant means of energy generation.