Understanding weather
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Understanding Weather. Carin Miranda Smyrna Middle School Winter 2013. Water in the Air. Evaporation is when water changes from a liquid to a gas. When air reaches its dew point relative humidity is at 100% . Clouds. Nimbostratus clouds will bring light to heavy continuous rainy weather.

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Understanding Weather

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Understanding weather

Understanding Weather

Carin Miranda

Smyrna Middle School

Winter 2013


Water in the air

Water in the Air

  • Evaporation is when water changes from a liquid to a gas.

  • When air reaches its dew point relative humidity is at 100%


Clouds

Clouds

  • Nimbostratus clouds will bring light to heavy continuous rainy weather.

  • Cumulonimbus clouds are large thunderstorm clouds that produce precipitation.

  • Altocumulus clouds are puffy mid-level clouds.

  • Cirrus clouds are high clouds made of ice crystals.


Precipitation

Precipitation

•Sleet-Starts as rain then freezes in the air.

  • Snow-Water vapor changes directly into a solid because of cold temperatures.

  • Hail-Forms when precipitation is sent back up into the clouds many times.


Air masses

Air Masses

  • Continental polar (cP) dry and cold

  • Maritime polar (mP) wet and cold

  • Continental tropical (cT) dry and warm

  • Maritime tropical (mT) wet and warm

  • C=dry

  • P=cold

  • M=wet

  • t-=warm


Fronts

Fronts

  • Warm front-warm air moves over cold air and replaces it.

  • Stationary front-Not moving. Brings many days of cloudy, wet weather.

  • Cold front-cold air mass displaces a warm air mass.

  • Occluded front-warm air mass is caught between two cold air masses and is forced to rise. Lots of precipitation.


Meteorology

Meteorology

  • Images of weather systems on television come from weather satellites.

  • From a weather map you can tell the locations of cold and warm fronts.

  • The lines connecting points of equal pressure on weather maps are called isobars.

  • Isobars help meteorologists by showing areas of high and low pressure.


Vocabulary

Vocabulary

  • Humidity

  • Air mass

  • Front

  • Barometric pressure

  • Meteorologist

  • Psychrometer


Vocabulary 2

Vocabulary 2

  • Thermometer

  • Barometer

  • Anemometer

  • Rain Gauge

  • Wind Vane

  • Wind


Vocabulary 3

Vocabulary 3

  • Hygrometer

  • Weather

  • Relative Humidity

  • Condensation

  • Cloud

  • Precipitation


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