The following diagram shows the electromagnetic spectrum. However all the names and colours have been mixed up.

What region of the REAL electromagnetic spectrum

1. has the highest frequency?

Which colour of visible light in the real spectrum..

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.

• A). Water (surface) waves
• B), Sound wave
• C). Radio wave
• D). Mexican wave

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?

• A). v= ƒ λ
• B). v= T λ
• C). v= 1/T
• D). v= Tƒ

14. What letter is used to represent the wavelength of a wave?

• A).  ƒ
• B).  λ
• C).  T
• D).  v

15. 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

16. Which of these diagrams shows the motion of waves passing through a gap of similar size to the wavelength?

17. What is this effect (above) called?

• A. refraction
• B. deflection
• C. diffusion
• D. diffraction

What are the missing values in this table showing data for sound waves travelling through different substances?

22. Which of these gives the range of human hearing?

• A). 2 – 2000 Hz
• B). 20 – 2000 Hz
• C).  2 – 20 000 Hz
• D).  20 – 20 000 Hz

A sound wave is produced by a student banging two wooden blocks together. The student is 50m from a large wall. After 0.3s an echo is heard.

• A).  Sound being refracted by the wall.
• B).  Sound being reflected off the blocks.
• C).  Sound being bounced off the air molecules.
• D).  Sound being reflected by the wall.

• A). 167 m/s
• B). 333 m/s
• C). 15 m/s
• D). 30 m/s

• A).  Take additional results
• B). Move closer to the wall
• C).  Bang the blocks as hard as possible
• D).  Use a datalogger and sound sensor to record the results