Use the pictures below to answer the following questions

A	B	C	D	E

Which sound wave has the highest frequency?  ________________________________

Which sound wave has the lowest frequency? _________________________________

Which sound wave has the lowest pitch? ____________________________________ 

1. 
   A diagram below shows the electromagnetic spectrum. What type of mechanical wave is an electromagnetic wave, longitudinal or transverse?
   

2. 
   When is an electromagnetic wave produced?
   

3. 
   Label the electric field and magnetic field of the electromagnetic below.
   
4. 
   Do electromagnetic waves need a medium?
   

5. 
   What is the speed of light in a vacuum (or empty space)?
   

6. 
   In a vacuum, all electromagnetic waves travel at the same speed. But not all electromagnetic waves are the same. Electromagnetic waves vary in wavelength and frequency. Solve the following problems. Use the equation: Speed = wavelength x frequency speed (c)= 3.0 x 10 8 m/s
   

1. 
   A radio station broadcasts a radio wave with a wavelength of 3.0 meters. What is the frequency of the wave?
   

2. 
   The radio wave of a particular AM radio station vibrates 680,000 times per second. What is the wavelength of the wave?