High / Low Pressure Differences

Question 1

Which is true with respect to a high pressure or low pressure system?

Answer 1

A high pressure area or ridge is an area of descending air.

Question 2

Which is true regarding high or low pressure systems?

Answer 2

A low pressure area or trough is an area of rising air.

Question 3

While flying cross country in the Northern Hemisphere, you experience a continuous left crosswind which is associated with a major wind system. This indicates that you

Answer 3

are flying toward an area of generally unfavourable weather conditions.

Question 4

When flying into a low-pressure area in the Northern Hemisphere, the wind direction and velocity will be from the

Answer 4

left and increasing.

Question 5

What prevents air from flowing directly from high-pressure areas to low-pressure areas?

Answer 5

Coriolis force.

Question 6

The general circulation of air associated with a high-pressure area in the Northern Hemisphere is

Answer 6

outward, downward, and clockwise.

Question 7

The wind system associated with a low-pressure area in the Northern Hemisphere is

Answer 7

a cyclone and is caused by Coriolis force.