Geography Grade 11: Synoptic Weather Maps

A collection of key terms and definitions related to Synoptic Weather Maps for Grade 11 Geography.

Synoptic Weather Map

A summary of the current weather situation, including pressure patterns, fronts, and wind directions.

Station Model

A graphical representation that conveys multiple weather data points without extensive text.

High Pressure

Regions of the atmosphere where air pressure is greater than that surrounding it, typically associated with clear skies.

Low Pressure

Regions of the atmosphere where air pressure is lower than that surrounding it, often associated with cloudiness and precipitation.

Isobar

A line on a weather map that connects points of equal atmospheric pressure.

Dew Point Temperature

The temperature at which air becomes saturated with moisture and dew forms.

Tropical Cyclone

A rapidly rotating storm system characterized by a center of low pressure.

Pressure Gradient

The rate of pressure change occurring over a given distance in the atmosphere, affecting wind speed.

Coastal Low

An area of low pressure located along coastlines, often leading to stormy weather.

Cold Front

A boundary between two air masses where a colder air mass displaces a warmer air mass.

Summer Synoptic Weather Map

Represents weather patterns typical for summer, often featuring thunderstorms and high temperatures.

Winter Synoptic Weather Map

Represents winter weather patterns, frequently indicating cold fronts and overcast conditions.

Westerlies

Prevailing winds from the west in the temperate zones.

Easterlies

Trade winds blowing from east to west in the tropics.

Pressure Belts

Regions of consistently high or low atmospheric pressure, influencing global winds and weather patterns.

Role of Oceans in Climate Control

The influence of ocean currents on regional weather and climate, affecting temperature and precipitation.