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Properties of Waves

Properties of Waves. To help with P3 M3 D3 Unit 5. Splitting up visible light. Label. Label. Label. 1. What colours do you see coming out of the prism? 2. Where do these colours come from? 3. Can you explain how this experiment works?. A:. B :. C:. D:.

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Properties of Waves

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  1. Properties of Waves To help with P3 M3 D3 Unit 5

  2. Splitting up visible light Label Label Label 1. What colours do you see coming out of the prism? 2. Where do these colours come from? 3. Can you explain how this experiment works?

  3. A: B: C: D:

  4. If you have normal vision you should see A: 29, B: 45, C: --, D: 26 If you are Red-Green Colour-Blind you will see: A: 70, B: --, C: 5, D: -- If you are Red Colour-blind you will see: A: 70, B: --, C: 5, D: 6

  5. Visible and Invisible light waves Visible Waves that we can’t see Waves that we can’t see

  6. Radio Micro Infra-Red Visible Light Ultra-Violet X rays Gamma Visible and Invisible light waves Wavelength increases Short/Long wavelength? Low/High frequency? Short/Long wavelength? Low/High Frequency?

  7. Sat-Nav • Instructions for using Sat Nav • Click on navigate to • Click on address • Type in a postcode • 1.How is the sat nav able to work out where you are and where the destination of a journey is? • 2.Where does the sat nav obtain the map of the roads from? • 3.Why is it important for sat nav users to regularly download software from the internet to keep their sat navs up to date?

  8. Using Mobile phones Mobile phones communicate with each other using microwaves. If a phone has ‘low reception’ it is in a place where something is blocking some of the microwaves from reaching the phone. Mobile phones can also communicate with each other using radiowaves labelled as “bluetooth”. 1.If you place a mobile phone in a fully sealed metal box, if you then try to phone that mobile phone you won’t be able to “reach” it. Why? 2.Why are some people worried that using mobile phones may be bad for your health?

  9. Using a radio • When you switch on the radio and tune into a local radio stationyou need to pick a number (e.g. BRMB has the number 96.4 and Galaxy Birmingham has the number 102.2) and you need to move the position that your aerial points to • 1. Why do you need to adjust the position of the aerial? • 2. What do the numbers mean?

  10. When a radio station is ‘on air’ it gives off radio waves. These radio waves bounce off the Earth’s ionosphere and bounces back onto the ground. People that have tuned in their radios, their aerials can pick up these bounced radio waves. • 3. Think about how radio waves travel from a radio station to radio aerials. Can we use radio waves to communicate with satellites and rockets in space?

  11. 4. What do you think is the main difference between satellite TV (e.g. Sky) and the traditional five channel TV?

  12. Sound waves Sound waves travel differently to light waves. 1.What happens when you “bang” the tuning fork against a table? 2.What causes sound waves?

  13. Paper cup telephone 1.When you talk through the paper cup telephone, does your voice sound louder or quieter? Why? 2.What is the paper cup used for?

  14. Comparing Light and Sound waves Sound waves Light waves

  15. Earthquakes 1.What causes Earthquakes? 2.Why do Earthquakes cause so much damage? 3.How are waves involved with Earthquakes?

  16. List the differences between light and sound?

  17. Task: Make a poster about waves To be used for assignment 3 • How light and sound travel • Examples of waves (include both sound and light) • How we detect the different types of waves • Earthquakes • How sat navs, mobile phones and radios work • How paper cup telephones work • How tuning forks work

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