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DO NOW…. GRAB YOUR GEOJOURNAL… Predict why weather could be different on the front side of a mountain (windward) than on the back side of the mountain (Leeward). Explain. Weather Factors. Fronts. Types of Fronts and How they Form. front – the area where the air masses meet and do not mix
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DO NOW… • GRAB YOUR GEOJOURNAL… • Predict why weather could be different on the front side of a mountain (windward) than on the back side of the mountain (Leeward). Explain.
Fronts Types of Fronts and How they Form
front – the area where the air masses meet and do not mix • There are 4 types of fronts: • Cold fronts • Warm fronts • Stationary fronts • Occluded fronts
Cold Front • cold front - cold air moves in under a warm air mass What kind of weather would you expect a cold front to produce? Cold fronts can produce short, heavy rains, often thunderstorms with heavy winds, followed by clear skies and cooler, drier weather.
Warm Front • warm front – warm air moves in over a cold air mass What kind of weather does a warm front produce? A warm front can cause steady rain or snow that may last for days and light winds, followed by warmer and more humid weather.
Stationary Front • stationary front – an unmoving front where a cold air mass and a warm air mass meet
Occluded Front • occluded front – a front formed where a warm front and cold front meet
What Do Fronts Look Like from Space? Satellites show large weather patterns, such as fronts and storms which help weather scientists.
A wind is the horizontal movement of air from an area of high pressure to an area of low pressure. All winds are caused by differences in air pressure.
local winds – winds that blow over short distances Local winds are caused by unequal heating of Earth’s surface within a small area. sea breeze – a wind that blows from an ocean or lake onto land land breeze – the flow of air from land to a body of water
Global Winds global winds – winds that blow steadily from specific directions over long distances The movement of air between the equator and the poles produces global winds. Coriolis Effect – the way Earth’s rotation makes winds curve
- Winds Coriolis Effect As Earth rotates, the Coriolis effect turns winds in the Northern Hemisphere toward the right.
evaporation – the process by which water molecules in liquid water escape into the air as water vapor
- Water in the Atmosphere How Clouds Form Clouds form when warm, moist air rises and cools. Water vapor condenses on tiny particles to form liquid water or ice crystals.
precipitation – any form of water that falls from clouds and reaches Earth’s surface Common types of precipitation include: • Rain • Sleet • Freezing rain • Hail • Snow
YOUR TURN… • Create your own 5 day forecast of Victoria, TX • Be CREATIVE and use the knowledge you just learned • It can be as HOT or as COLD as you’d like