CIE iGCSE - Waves

Page 1

The following diagram shows the electromagnetic spectrum.

1 & 2. What are the 2 missing labels?

 ? transverse waves gamma rays sound waves alpha rays radio waves microwaves infrared ultraviolet x rays ? transverse waves gamma rays sound waves alpha rays radio waves

What region of the electromagnetic spectrum ...

3. has the most energy?
4. is used in remote controls for televisions?
5. can be used to kill cancer cells?
6. is used to make florescent inks glow?

Which colour of visible light in the spectrum..

7.  Has the longest wavelength?
8, Has the highest frequency?

9. All electromagnetic waves have similar properties. Which one of these is NOT a property of electromagnetic waves?

• A). All travel at the same speed
• B), They all can pass through a vacuum
• C). They can all be reflected
• D). They all have a longer wavelength than sound waves.
10. Which one of these is a longitudinal wave?
• A). Water (surface) waves
• B), Sound wave
• D). X ray

11. Which of these is the correct term for a wave where the individual particles move at right angles to the direction of the wave energy transfer?

• A). Transverse
• B). Longitudinal
• C). Refracted
• D). Propagated

12. Which of these arrows correctly shows the amplitude and wavelength?

 Amplitude Wavelength A). x p B). y p C). x q D). y q

13. A wave machine generates 30 waves every 15 seconds.  What is the frequency of the wave?

• A). 0.5 s
• B). 0.5 Hz
• C). 2 s
• D). 2 Hz

14. Sound waves are often described using regions of high pressure and low pressure air. The correct terms for these regions are...

• A). compressions and rarefactions
• B). compressions and decompressions
• C). decompressions and rarefactions
• D). decompressions and condensations
15. Which of these is the correct formula to calculate wave velocity?
• A). v= ƒ λ
• B). v= T λ
• C). v= 1/T
• D). v= Tƒ