When the wind speed is zero, the wind direction is A) 0o B) ...

[mynx]

When the wind speed is zero, the wind direction is
 
  A) 0o
  B) 90 o
  C) 180 o
  D) 270 o
  E) undefined

Question 2

At the equator, the altitude of the 500 mb level is always larger than it is at the north pole because
 
  A) the air usually has higher pressure at the equator
  B) the air is always denser at the equator
  C) the air is always warmer at the equator

[peilian]

Answer to Question 1

Answer: E

Answer to Question 2

Answer: C

[mynx]

Excellent

[bulacsom]

TYSM