Causes of Weather
The long-term average of variation in weather for a particular area
What is climate?
This narrow wind band occurs above large temperature contrasts and can flow as fast as 185 km/h.
What is a jet stream?
An instrument used to measure temperature using either the Fahrenheit or Celsius scale
What is a thermometer?
This record of weather data for a specific place at a specific time uses meteorological symbols.
What is a station model?
Short-term variations in atmosphere phenomena that interact and affect the environment and life on Earth
What is weather?
The wind systems located between latitudes 30 degrees and 60 degrees North and South
What are the prevailing westerlies?
This weather instrument measures wind speed.
What is an anemometer?
A weather forecast that uses numerical data to predict how atmospheric variables change over time
What is a digital forecast?
This large volume of air has the characteristics of the area over which it forms
What is an air mass?
This causes the directions of Earth's winds to be influenced by Earth's rotation, resulting in fluids and objects moving in an apparent curved path instead of a straight line.
What is the Coriolis effect?
This instrument measures air pressure.
What is a barometer?
An line on a weather map connecting areas of equal pressure
What is an isobar?
A change in the wave frequency that occurs due to the relative motion of the wave as it moves toward or away from an observer
What is the Doppler effect?
A boundary between two air masses of differing densities that can stretch over large areas of Earth's surface
What is a front?
The wind zones between 60 degrees N to the North Pole and 60 degrees south to the South Pole
What are the polar easterlies?
This weather instrument measures humidity.
What is a hygrometer?
This line on a weather map connects areas of equal temperature.
That is an isotherm?
Air masses form over these areas.
What are source regions?
These two global wind systems flow between 30 degrees North and South latitudes, where air sinks, wars, and returns to the equator in a westerly direction.
What are the trade winds?
This balloon-borne weather instrument has sensors that measure air pressure, humidity, temperature, wind speed, and wind direction of the upper atmosphere.
What is a radiosonde?
This weather forecast compares current weather patterns to patterns that occurred in the past
What is an analog forecast?