Study Of Air Pressure Flashcards
In the Southern Hemisphere which way does low pressure rotate?
Converging clockwise
Which way does high pressure diverge?
Anti-clockwise
When is it considered a low pressure? (What Hectopascales)
And when is it considered a high pressure?
Below 1013
Above 1013
What weather conditions do low pressure cells create?
Rising air = cooling = condensation = clouds =rain
🌧🌧🌧🌧
What weather conditions do high pressure cells create?
Sinking air = warming = dry and clear = no rain
☀️☀️☀️☀️☀️☀️
What is another name for low pressure cells?
Depression
TROPICAL CYCLONES:
When do they occur ? (What season)
Summer Storms
🌦🌦🌦
TROPICAL CYCLONES:
What hecotopascale do they occur at?
Below 800
TROPICAL CYCLONES:
What are the special requirements needed to form one? ( Temperature, weather 🌊🌊 …)
(3)
Needs thunderstorms and waves
26°C
Narrow banks where it can develop
Warm water
TROPICAL CYCLONES:
Where is the most destructive part of the cyclone?
Eye wall
TROPICAL CYCLONES:
Where does a cyclone get its energy from?
Draws energy from warm water / water vapour
TROPICAL CYCLONES:
What direction does it rotate in? (SH)
Clockwise
TROPICAL CYCLONES:
Explain how it occurs
- Needs a very low pressure
The warm water evaporates and forms clouds and hectic winds etc.
COASTAL LOWS:
Between which Hectopascales does it occur?
1012-1018
COASTAL LOWS:
Where are they found?
Along the coast
MID-LATITUDE CYCLONES:
What do the Hectopascales lie between?
900-1013
MID-LATITUDE CYCLONES:
Between which lines of latitude do they form?
30-50°
MID-LATITUDE CYCLONES:
Which direction of coastline does it effect?
West coastlines
MID-LATITUDE CYCLONES:
In which season does it form?
Winter❄️
MID-LATITUDE CYCLONES:
Which way does it travel?
From west to east
MID-LATITUDE CYCLONES:
How is it formed?
Hot air rises and cold air sinks, therefore they clash and go against each other causing a cold front or a hot front.
MID-LATITUDE CYCLONES:
Where do they come from
South Pole
Explain how bigger storms are formed
Lower the pressure quicker the air rises = more clouds = more rain
What is air pressure? And what do we measure it in?
The force of gravity acting on the gas molecules.
Unit=Hectopascales
