Science Department Lesson plan Teacher information Technicians list: 1) photocell chimney experiment 2) Wind generator demo 3) LED protective resistor milli-ammeter lamp metre rule sheet of black paper-P2_a_01_practical 4) Solar cells, rulers, multi meters 20:58 Syllabus/Unit: code: Lesson number: 1
Lesson Title: Collecting energy from the sun Learning Outcomes Learning Outcome 1: Describe how light produces electricity in a photocell Grade C Learning Outcome 2: Outline the advantages and disadvantages of using photocells for electricity and how passive solar heating reduce demands on other energy resources. Grade B Learning Outcome 3: Explain how a photocell works using ideas about electrons (HT). Grade A/A* How I did
Targets Connector How do we get energy from the sun. What type of energy is it? How do we use it? 20:58 Extended Learning Extended Learning task: Research the use of photocells for providing electricity in remote locations. Due date:
Criteria for Grade C: Basic description, basic detail. Criteria for Grade B: Description with explanation and good level of detail. Criteria for Grade A: Detailed description and in depth detailed explanation using examples to highlight points made. 20:58 BIG picture Key Question: Video clip/Demo:
What skills will you be developing this lesson? ICT- through using laptops Numeracy- by using formulae in calculations Literacy- by writing explanations using correctly spelt keywords and good grammar. Team work- during a practical investigation Self management- by completing an individual assignment by .. Creative thinking- by designing a . Independent enquiry- by researching the internet Participation- during a practical activity
Reflection- through self and peer assessment of each outcome How is this lesson relevant to every day life? (WRL/ CIT/SMSC) Why is conservation of fossil fuels important for
the future of mankind? Quick Discussion: What do you 20:58 already know? Keywords: Create sentences that correctly use the keywords below. Put your hand up photocell if there is any key word from the list solar cell that you dont know the p-n junction
meaning of. direct current silicon intensity 20:58 New information task 1 http://www.youtube.com/watch?v=1gta2ICarDw&fea ture=related Visual: Watch the clip above. Audio: Discuss how this energy could be harnessed? What are the major obstacles in the way? How could these obstacles be overcome? 20:58 New information task 1
Photocells have no moving parts. They do not need to be connected to the National Grid, so no cables are needed and they can work in remote locations. For example, they are used to power the lights for some road signs. The output of photocells depends on the surface area that is exposed to light. For a given light intensity, the larger the area, the greater the power output. 20:58 Photocell 20:58 Learning Outcome 1: Review Go back to your Learning Outcome grid and fill out the How I did and the Targets column.
Learning Outcome Learning Outcome 1: Describe how light produces electricity in a photocell Grade C How I did Met? Partly met? Not met? Targets How can I improve on Learning Outcome 1? 20:58 Keywords:
Demonstrate your Learning for Outcome 1 Evaluate Justify the cost of setting up of expensive solar panels in buildings. A Apply (C) Use the concept of solar energy and discuss how it will help solve the energy problems in the world. Solar cell, energy, electricity Create (A*)
Create Which Evaluate task(s) will you choose toAnalyse complete? Try to Applya target grade higher than Understand your current Remember grade.
Put together the idea of harnessing of solar energy. How do we transform solar energy to electrical energy. Analyse (B) Compare solar energy with fossil fuel energy generation 20:58 To analyse the advantages and disadvantages of photocells- Task 2 Visual: - pictures of photocells Audio: students discuss in pairs the advantages and disadvantages of photocells Kinaesthetic: pupils come up to the board and share their discussed ideas
20:58 Parking meter Discuss the advantages and disadvantages of using a Solar Cell to provide electricity for a Parking Meter. 20:58 Why use solar cells to power satellites? Solar cells (or photocells) turn light energy from the Sun directly into direct current electricity. Manufacturing solar cells is very expensive and requires the use of highly toxic materials. However, once the solar cell is built it produces no pollution and requires little
maintenance. Solar cells are ideal for use in remote locations where maintenance is difficult and other sources of electricity would be expensive. Satellites have been powered using solar cells since the 1950s. Passive solar heating and solar panels Glass windows provide passive solar heating for buildings. Sunlight passes through the glass and is absorbed by surfaces in the
building. It is transferred into heat energy, which is emitted as infrared radiation. This is reflected back into the building by the glass. Solar panels 20:58 Keywords: Demonstrate your Learning for Outcome 2 Evaluate (A) Justify why money should be invested to
include solar panels, or solar cells for houses in the UK Apply (C) Identify the benefits of passive solar heating 20:58 Solar panel Passive Sunlight Create Which Evaluate task(s) will you
Analyse to choose complete? Try to Apply target a grade higher than Understand your current Remember grade. Intensity National grid Availability Analysis Compare the cost of
solar and normal heating bills over a period of time Learning Outcome 2: Review Go back to your Learning Outcome grid and fill out the How I did and the Targets column. Learning Outcome Learning Outcome 2: Outline the advantages and disadvantages of using photocells for electricity and how passive solar heating reduce demands on other energy resources. Grade B How I did Targets
I am working at grade .....because ........................... ........................... I can move up to grade... by 20:58 New Information for Learning Outcome 3 Explore and Discover: Visual: Animation 20:58
How do solar cells work? Task 3 1. Set up the circuit as shown in the diagram. 2. Place the lamp above the photocell so that the front of the lamp is 10 cm away. 3. Record the readings of the milliammeter in the table. 4. Repeat, covering the photocell with the black paper one section at a time, until you have 5 sets of readings. Area of photocell exposed current in mA to light 20:58 Task 3- Equipment set up Photocell mAmmter
LED Resistor 20:58 Task 3 The _______________ is the source of _______________ for the Earth. A photocell transfers _______________ into _______________ . It produces a _______________ current. This is similar to the current from a _______________. The output of a photocell increases when more _______________ is exposed to the light source and when the light source is _______________. The photocell is a _______________ energy source. The photocell does not pollute the atmosphere in the form of _______________ or _______________ gases. The disadvantage of photocells is that they do not produce _______________ when it is _______________ area
battery brighter dark electricity energy greenhouse light direct dust renewable Sun
20:58 Learning Outcome 3: Review Go back to your Learning Outcome grid and fill out the How I did and the Targets column. Learning Outcomes How I did Targets Learning Outcome 3: Explain how a photocell works using ideas about electrons (HT). Grade A/A* I am working at grade .....because
........................... ........................... I can move up to grade... by 20:58 Review- 6 Marks 20:58 Answers 20:58
