Chapter 18 Gathering and recording weather data Flashcards
What are air masses
They are large bodies of air that have similar temperature, pressure and moisture throughout
What do maritime air masses bring
Rain
What do continental air masses bring
tend to be dry
What do polar and artic air masses bring
Cold
What do tropical air masses bring
Warm
How is a cold front shown on a weather map
With a solid blue line with triangular reeth
How is a warm front shown on a weather map
Solid red line with semi circles
When does a cold front occue
When a cold air mass pushes un and replaces a warm air mass
How does a warm front occur
When a warm air mass approaches a cold air mass
What is a depression
Areas of low pressure that produce unsettled conditions.
When do depressions develop
When a warm tropical air mass meets a cold polar air mass, creating warm and cold fronts
What is an anticyclone
An air mass with high pressure
What weather would an anticyclone bring
Clear cloudless skies
hot sunny weather in summer
Cold and frosty nights in winter
Namesome weather measuring instruments
Stevenson screen
Anemometer
Wind vane
Rain gauge
Campbell-stokes sunshine recorder
What is the most common type of weather chart
Weather synoptic charts
