Our guest scientist-in-residence on Thursday 20th November was Louise Anderson. Louise is a PhD student at Queen Mary’s University, London and is in the process of writing her thesis on dye sensitized solar cells for energy efficient glazing. She came to explore a range of different energy sources with year 4.
First we watched a video about how gases are formed from the build-up of old dinosaurs and plants, and how we can drill into the ground then the gas travels through pipes for us to use. We found out that it take 1, 000,000 years for this gas to form. The burning of these gases damages the environment so we are now reducing the amount that we are using and are using new energy forms instead for example wind turbines.
Then we watched a video showing how solar energy works.
We made a working circuit using the acid lemons. We needed at least 5 lemons for the bulb to light.
‘’I was surprised because I didn’t expect the bulb to light,’’ said Christopher.
‘’I was also surprised because the lemon acid made a coin shiny,’’ reported Jorja.
Before long we made wooden vehicles to demonstrate motion energy. We used cotton wheels and elastic bands. We had a competition. The results confirmed our predictions that the smaller the band the further it travelled.
We also discussed the advantages and disadvantages of fossil fuel and renewable energy. It was awesome – thank you!!