Difference between revisions of "Electromagnetic Radiation"
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Revision as of 15:26, 13 November 2015
| Philosophy of Science |
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Concept Map
Textbook
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Additional information
Useful websites
- http://en.wikipedia.org/wiki/Electromagnetic_radiation
- http://chemwiki.ucdavis.edu/Physical_Chemistry/Spectroscopy/Fundamentals/Electromagnetic_Radiation Click here : Waves and charateristics
- http://en.wikipedia.org/wiki/Radiation#Notes_and_references Click here : About Radiation notes and references
- http://www.school-for-champions.com/science/electromagnetic_waves.htm#.U05YjGYvnzo -Electromagnetic Spectrum
- http://www.school-for-champions.com/science/light.htm -VisibleLight
- http://www.school-for-champions.com/science/xrays.htm -X-Rays
Reference Books
- Refer 9th standard Science TamilNadu textbook from the following link page no 255- 340 Click here
Teaching Outlines
Concept # Introduction to Electromagnetic Radiation
Learning objectives
- Terms related to Wave Motion
- Terms related to Elcetromagnetic Wave
- Distinguish between Mechanical Wave and Electromagnetic wave
Notes for teachers
These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.
Activity No # Electromagnetic Waves
- Play with a bar magnet and coils to learn about Faraday's law.
- Move a bar magnet near one or two coils to make a light bulb glow.
- View the magnetic field lines or use a meter to show the direction and magnitude of the current.
- Play with electromagnets, generators and transformers.
- Estimated Time
- Materials/ Resources needed
Downloaded video, DVD player/ Computer and projector - Prerequisites/Instructions, if any
- Multimedia resources
This video explains about electromagnetic waves
Electromagnetic radiation is self sustaining energy with electric and magnetic field components.
It is commonly referred to as 'light' also known As: light, EMR, EM radiation, electromagnetic waves
- Website interactives/ links/ simulations
Interactive Simulations on Radio Waves and Electromagnetic Waves Radio and Electromagnetic Waves
- Process (How to do the activity)
- Developmental Questions (What discussion questions)
- Evaluation (Questions for assessment of the child)
Evaluation question
Questions:-Electromagnetic Spectrum
What is the electromagnetic spectrum?
What are the characteristics of electromagnetic waves?
How are these waves created and detected?
Source:Electromagnetic Spectrum -School for Champions
Questions:-Visible Light
How is visible light detected?
What are its main characteristics?
How is light created?
Source:Visible Light-School for Champions
Questions:-X-Rays
How where x-rays discovered?
How are the created and detected?
How are x-rays used?
Source:X-Rays-School for Champions
- Question Corner
Activity No 1#Explain Difference between electromagnetic waves and Mechanical Waves
- Estimated Time
- Materials/ Resources needed
Downloaded video, DVD player/ Computer and projector - Prerequisites/Instructions, if any
- Multimedia resources
This video explains about difference between electromagnetic waves and mechanical waves.How to transfer all energy from one place to another
Source:Youtube
- Website interactives/ links/ simulations
Interactive simulations of electromagnetic wave
Wave on a string
- Process (How to do the activity)
- Developmental Questions (What discussion questions)
- Evaluation (Questions for assessment of the child)
- Question Corner
Concept #Properties and Ranges of Electromagnetic Waves
Learning objectives
- General Properties of Electromagnetic Waves
- Seven broad ranges of Electromagnetic Waves
- Method of producing different ranges of Electromagnetic Waves
- Recognize that visible light is a part of Electromagnetic Radiations
- Uses of Electromagnetic Waves
Notes for teachers
These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.
Activity No 2# Producing of Waves
- Take about 30cm of Insulated copper wire
- Use the wire from an old transformer or motor
- Wind it around a pencil stick
- Pass current through the wire from a single pentorch cell
- A magnetic field is produced around the coil
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ simulations
- Process (How to do the activity)
- Developmental Questions (What discussion questions)
- Evaluation (Questions for assessment of the child)
- Question Corner
Activity No 3# Electromagnetic Waves and Radiation
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ simulations
- Process (How to do the activity)
- Developmental Questions (What discussion questions)
- Evaluation (Questions for assessment of the child)
- Question Corner
Project Ideas
Fun corner
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