quiz 4 princom

1. If the electric field is propagating parallel to the earth's surface, the wave is said to be ___________ polarized.

2. If the polarization remains constant, it is described as __________ polarization.

3. _________ shows a surface of constant phase of a wave.

4. Electromagnetic waves represent the ___________ in the direction of propagation.

5. ____________ is the intensity of the electric and magnetic fields of an electromagnetic wave propagating in _________

6. Absorption off radio frequencies in a normal atmosphere depends on frequency and is relatively insignificant below approximately _________

7. ________ occurs whenever a radio wave passes from one medium into another medium of different density.

8. Reflection occurs when an incident wave strikes a _________ of two media and some or all of the incident power does not enter the ____________

9. When the field strength varies with ___________, this describe as elliptical polarization.

10. The principle of ______________ states that the total voltage intensity at a given point in space is the sum of the individual wave vectors.