Pressure Flashcards
Define the term Isobar.
An isobar is a line joining place of equal pressure.
Describe a low pressure in the southern hemisphere.
In a low pressure in the southern hemisphere:
- Air sinks/descends - diverges - moves anti-clockwise
True or false (if false correct the statement)
In a low pressure in the souther hemisphere air ascends, converges and moves clockwise.
True
How do we know which way wind blows in a high pressure?
In all high pressures wind blows outward and in the southern hemisphere it moves anti-clockwise.
What is another way of referring to a low pressure?
A cyclone
What is another way of referring to a high pressure
An anti-cyclone
How do we know that it is summer in the Southern Hemisphere when reading a synoptic chart?
In the Summer:
- low pressure over the interior - clear skies over the W.Cape - cloudy storms in highveld - Tropical cyclone on the east coast.
How do we know that it is Winter in the southern Hemisphere when reading a synoptic chart?
In winter:
- there is a high pressure over the interior - cloudy skies in the W.Cape - clear skies over the interior - cold fronts are present over South Africa.
In which season does the Kalahari High Show?
In winter
