NAME: __________________________SS#: ____________________________Grade: __________/20

1. (1 pt) What does RADAR stand for?

2. (1 pts) Why is radar an inaccurate instrument for measuring rainfall.

3. (2 pts) What are the two main types of radar images that meteorologists use?

4. (1 pt) A Doppler radar measures: (circle one):
A. the entire wind field
B. the components of the wind field towards and away from the radar (parallel to the radar beam)
C. the components of the wind to the right and left of (or perpendicular to) the radar beam

5. (1 pt) What is reflectivity?

6. (1 pt) What is Doppler radar used for?

7. (2 pts) Would a radar be very useful for measuring reflectivity above it or very near it? Why do most major metropolitan areas have their radars out of town a little bit?

8. (2 pts) A radar is not useful for measuring reflectivity real far away from the radar site. Give me 2 reasons why this statement is correct.

9. (1 pt) The Doppler Effect has to do with the difference in frequency of an object moving towards you versus an object moving away from you. What is another term for the change in frequency, which a Doppler radar actually measures?

10. (2 pts) Put "positive" in one blank and "negative" in another. On a velocity image, winds toward the radar are usually ____________ while winds away from the radar are usually _____________.

11. (1 pt) What is it called if winds in one direction are stronger than the radar can measure and the display shows a jump from one extreme end of the scale to the other?

12. (1 pt) What does NEXRAD stand for?

13. (1 pt) What does WSR-88D stand for?

14. (1 pt) Why do you get less resolution the farther away from a radar you get. (Hint: think of the beam as a cone)

15. (2 pts) What are two of the three major advantages of the Phased Array Radar over today's conventional radar?