9.01 Waves

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Test Your Knowledge

1. _____ require a medium to travel.
   
   1. Electromagnetic waves
   2. Mechanical waves
   Answer: Mechanical waves require a medium to travel.



2. Which type of wave is also called a “compressional wave”?
   
   1. Longitudinal waves
   2. Transverse waves
   Answer: Longitudinal wave is also called a “compressional wave”.



3. In which type of wave do particles move back and forth at right angles to the direction of the wave?
   
   1. Longitudinal wave
   2. Transverse wave
   Answer: In transverse waves particles move back and forth at right angles to the direction of the wave.



4. _____ are repeating disturbances that transfer energy through matter and space.
   
   1. Waves
   2. Magnets
   Answer: Waves are repeating disturbances that transfer energy through matter and space.



5. If you lay a slinky on the floor and push and pull the slinky to form compressions that move along the length of the slinky, what type of wave have you made?
   
   1. Longitudinal wave
   2. Transverse wave
   Answer: You have made a longitudinal wave. If you lay a slinky on the floor and push and pull the slinky to form compressions that move along the length of the slinky.