* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Energy transformations
Efficient energy use wikipedia , lookup
William Flynn Martin wikipedia , lookup
Open energy system models wikipedia , lookup
Energy subsidies wikipedia , lookup
Potential energy wikipedia , lookup
100% renewable energy wikipedia , lookup
Energy storage wikipedia , lookup
Low-Income Home Energy Assistance Program wikipedia , lookup
Public schemes for energy efficient refurbishment wikipedia , lookup
Kinetic energy wikipedia , lookup
Low-carbon economy wikipedia , lookup
Zero-energy building wikipedia , lookup
World energy consumption wikipedia , lookup
Energy Charter Treaty wikipedia , lookup
Regenerative brake wikipedia , lookup
Alternative energy wikipedia , lookup
Gibbs free energy wikipedia , lookup
Life-cycle greenhouse-gas emissions of energy sources wikipedia , lookup
International Energy Agency wikipedia , lookup
Energy policy of the United Kingdom wikipedia , lookup
Distributed generation wikipedia , lookup
Energy returned on energy invested wikipedia , lookup
Internal energy wikipedia , lookup
Energy efficiency in transport wikipedia , lookup
Energy policy of Finland wikipedia , lookup
Energy harvesting wikipedia , lookup
Energy in the United Kingdom wikipedia , lookup
Negawatt power wikipedia , lookup
Energy policy of the European Union wikipedia , lookup
Conservation of energy wikipedia , lookup
United States energy law wikipedia , lookup
Energy efficiency in British housing wikipedia , lookup
Energy Independence and Security Act of 2007 wikipedia , lookup
topic: Forms of energy activity: Energy transformations Students are introduced to the use of flow diagrams to represent simple energy transformations. Suggested time: 45 minutes Summary of Key Learning Points Students: - describe the difference between energy transferal and energy transformation - recognise that energy transformations can be represented using flow diagrams - construct simple flow diagrams to represent given energy transformations - identify energy transformations in a Rube Goldberg machine Transferring and transforming energy 5 minutes The first page shows two videos. Both involve a domino situation, but in one a chemical reaction is happening. The idea is to highlight the difference between energy transformation (video 1) and energy transferral (video 2). Energy transformation involves one energy turning into another type of energy. Energy transferal involves the same type of energy being passed from one object to the next. Suggested answers: Different: The one on the left involves a chemical reaction and the one on the right doesn't. Similar: They both involve energy being transferred along a chain of objects. (Inquiry point 1) Energy flow diagrams 5 minutes This page is an introduction to the use of energy flow diagrams. Talk students through the construction of these diagrams using the two examples on the page. Students complete two parts of the torch energy flow diagram. Answer: Chemical energy -> Electrical energy -> Light, Heat energy (Inquiry point 2) © IntoScience 2013. This sheet may be reproduced for classroom use Page 1/3 topic: Forms of energy activity: Energy transformations The Explore this on 'Energy transformations and the Sun' explains the importance of the Sun to life on Earth. Radiometer 5 minutes Explain to students what a radiometer is. Get them to try to offer an explanation for why it turns clockwise, not anti-clockwise when the light is turned on. Answer: Light energy -> kinetic energy (Inquiry point 3) If students need to refresh their memories about the different types of energy, they can use the Energy reference guide at the top of the page. Dynamo 5 minutes Turning the handle of the dynamo spins a generator and creates an electric current that lights the light globe. Answer: Kinetic energy (arm) -> kinetic energy (generator) -> electrical energy -> heat and light energy (Inquiry point 4) Candle 5 minutes The energy changes are actually a bit more complex than shown here. The burning wick vaporizes the candle wax, which then mixes with oxygen and combusts. Answer: Chemical potential -> heat and light energy (Inquiry point 5) Basketball 5 minutes Remind students that a basketball actually deforms as it bounces. This deformation adds elastic potential. The amount of heat produced is small, but still present. Answer: Gravitational potential -> kinetic energy -> elastic potential, sound and heat energy (Inquiry point 6) Talking point: What types of energy is the elastic potential of the ball converted into as it rises back up? (Answer = gravitational potential and kinetic energy) © IntoScience 2013. This sheet may be reproduced for classroom use Page 2/3 topic: Forms of energy activity: Energy transformations Solar-powered car 5 minutes The solar panel directly generates a current to move the car. Answer: Light energy -> electrical energy -> kinetic energy (Inquiry point 7) The page turner 10 minutes On this page you will find a very cool video by Brooklyn-based kinetic artist Joseph Herscher. Have students watch the video a couple of times then try to write down as many of the energy transformations as they can. There are quite a few, so there is no need to try to get all of them! Energy transformations include: Gravitational potential -> kinetic energy (balls dropping) Chemical potential -> kinetic energy (water boiling) Electrical energy -> heat energy (hair dryer) (Inquiry point 8) Suggested completion levels Basic – Inquiry point goal = 4 Students at this level will: construct a simple energy flow diagram showing at least one transformation. Core – Inquiry point goal = 6 Students at this level will: construct energy flow diagrams for at least two examples; identify at least one energy transformation in 'The page turner'. Advanced – Inquiry point goal = 8 Students at this level will: construct simple and complex energy flow diagrams for multiple examples; identify all energy transformations in ‘The page turner’ and describe them using flow diagrams. © IntoScience 2013. This sheet may be reproduced for classroom use Powered by TCPDF (www.tcpdf.org) Page 3/3