EM Waves vs Mechanical Waves

The graph indicates what about the relationship between wavelength and frequency?

• as wavelength decreases, frequency increases

  
  

• as wavelength decreases, frequency decreases

  
  

• as wavelength increases, frequency increases

  
  

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The GALEX observatory was a recent observatory that was launched to observe over a half-billion galaxies going back to when our Universe was just about 3 billion years old. It used wavelengths of higher energy than visible light. Which of these could describe the wavelengths used by the GALEX observatory to make observations in space?

• microwaves

  
  

• radio waves

  
  

• ultraviolet waves

  
  

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When comparing types of waves, which would you associate with visible light?

• Electromagnetic

• Mechanical

• Both

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When comparing types of waves, which would you associate with a longitudinal wave?

• electromagnetic

• mechanical

• both

Which type of wave's speed is dependent on the medium they are traveling through?

• Electromagnetic

• Mechanical

• Both

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This graph is accurate because

• mechanical waves cannot travel through a medium.

  
  

• electromagnetic waves move faster than mechanical waves.

  
  

• mechanical waves move faster than electromagnetic waves.

  
  

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The crowd in a stadium creates a wave traveling across the stands by having people stand up and then sit down one after another. The people move up and down creating the appearance of a wave moving across the stadium. This type of wave is best described as

• a transverse wave.

  
  

• a compression wave.

  
  

• an electromagnetic wave.

  
  

Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. Identify another name for this type of wave motion.

• transverse waves

  
  

• longitudinal waves

  
  

• electromagnetic waves

  
  

Explain what could be done to a note played on an instrument to change that distance from A to B.

• Changing the pitch (frequency) of the note will change its length.

  
  

• Changing the loudness of the note will change its length.

  
  

• Changing the amplitude of the note will change its length.

  
  

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Identify the distance labeled A to B.

• From A to B is known as the wavelength.

  
  

• From A to B is known as the amplitude.

  
  

• From A to B is known as the Frequency.

  
  

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