Mrs. TweedieMrs. TweedieApril 2006April 2006

Mrs. TweedieMrs. TweedieApril 2006April 2006

VocabularyVocabularyObserving WeatherObserving Weather

VocabularyVocabularyObserving WeatherObserving Weather

The The atmosphere atmosphere is the air is the air that that surrounds surrounds Earth. The Earth. The atmosphere atmosphere contains contains water vapor water vapor as well as as well as small pieces small pieces of dust and of dust and pollution.pollution.

The The atmosphere atmosphere is the air is the air that that surrounds surrounds Earth. The Earth. The atmosphere atmosphere contains contains water vapor water vapor as well as as well as small pieces small pieces of dust and of dust and pollution.pollution.

Temperatures in Temperatures in the the thermospherethermosphere can be higher can be higher than 2,000° C.than 2,000° C. Air particles Air particles can be miles apart in this can be miles apart in this part of the atmosphere.part of the atmosphere.

Temperatures in Temperatures in the the thermospherethermosphere can be higher can be higher than 2,000° C.than 2,000° C. Air particles Air particles can be miles apart in this can be miles apart in this part of the atmosphere.part of the atmosphere.

Temperatures are lower in Temperatures are lower in the the mesosphere mesosphere and can go and can go below -120° C.below -120° C.

Temperatures are lower in Temperatures are lower in the the mesosphere mesosphere and can go and can go below -120° C.below -120° C.

The stratosphereThe stratosphere contains the contains the atmosphere’s ozone. atmosphere’s ozone. Temperatures here are usually Temperatures here are usually below freezing. Long distance below freezing. Long distance jets sometimes fly low in the jets sometimes fly low in the stratosphere.stratosphere.

The stratosphereThe stratosphere contains the contains the atmosphere’s ozone. atmosphere’s ozone. Temperatures here are usually Temperatures here are usually below freezing. Long distance below freezing. Long distance jets sometimes fly low in the jets sometimes fly low in the stratosphere.stratosphere.

Ozone is a Ozone is a type of type of oxygen. It oxygen. It absorbs absorbs harmful harmful rays from rays from the sun. the sun.

Ozone is a Ozone is a type of type of oxygen. It oxygen. It absorbs absorbs harmful harmful rays from rays from the sun. the sun.

The The troposphere troposphere is the layer of is the layer of the atmosphere where you live. the atmosphere where you live. Air particles in this layer are Air particles in this layer are close enough for you to breathe close enough for you to breathe easily. All our weather takes easily. All our weather takes place in the troposphere.place in the troposphere.

The The troposphere troposphere is the layer of is the layer of the atmosphere where you live. the atmosphere where you live. Air particles in this layer are Air particles in this layer are close enough for you to breathe close enough for you to breathe easily. All our weather takes easily. All our weather takes place in the troposphere.place in the troposphere.

Weather Weather is what is happening in is what is happening in the atmosphere at a certain the atmosphere at a certain place. Temperature, wind, and place. Temperature, wind, and precipitation are all parts of precipitation are all parts of weather.weather.

Weather Weather is what is happening in is what is happening in the atmosphere at a certain the atmosphere at a certain place. Temperature, wind, and place. Temperature, wind, and precipitation are all parts of precipitation are all parts of weather.weather.

Meteorologists Meteorologists are are scientists who study scientists who study weather and the weather and the atmosphere. atmosphere.

Meteorologists Meteorologists are are scientists who study scientists who study weather and the weather and the atmosphere. atmosphere.

Blizzards Blizzards are large are large snowstorsnowstorms. ms.

Blizzards Blizzards are large are large snowstorsnowstorms. ms.

Hurricanes are strong, Hurricanes are strong, dangerous storms that form dangerous storms that form over warm ocean waters. over warm ocean waters. Hurricanes have winds of 75 Hurricanes have winds of 75 miles per hour or more. miles per hour or more.

Hurricanes are strong, Hurricanes are strong, dangerous storms that form dangerous storms that form over warm ocean waters. over warm ocean waters. Hurricanes have winds of 75 Hurricanes have winds of 75 miles per hour or more. miles per hour or more.

Tornadoes Tornadoes are violent are violent windstorms. windstorms. The winds The winds are so are so strong that strong that they can they can destroy destroy homes and homes and lift trains lift trains from their from their tracks. tracks.

Tornadoes Tornadoes are violent are violent windstorms. windstorms. The winds The winds are so are so strong that strong that they can they can destroy destroy homes and homes and lift trains lift trains from their from their tracks. tracks.

Temperature is a measure Temperature is a measure of how hot or cold of how hot or cold something is. something is.

Temperature is a measure Temperature is a measure of how hot or cold of how hot or cold something is. something is.

An air mass is a large body An air mass is a large body of air with the same of air with the same temperature and moisture.temperature and moisture.

An air mass is a large body An air mass is a large body of air with the same of air with the same temperature and moisture.temperature and moisture.

A front is a place where two A front is a place where two air masses of different air masses of different temperatures meet. Most temperatures meet. Most weather changes happen at weather changes happen at fronts.fronts.

A front is a place where two A front is a place where two air masses of different air masses of different temperatures meet. Most temperatures meet. Most weather changes happen at weather changes happen at fronts.fronts.

Precipitation is measured Precipitation is measured by using a rain gauge or a by using a rain gauge or a snowboard.snowboard.

Precipitation is measured Precipitation is measured by using a rain gauge or a by using a rain gauge or a snowboard.snowboard.

ThunderheThunderheads are ads are giant giant clouds that clouds that form along form along cold cold fronts.fronts.

ThunderheThunderheads are ads are giant giant clouds that clouds that form along form along cold cold fronts.fronts.

Wind is the movement of Wind is the movement of air. Wind happens because air. Wind happens because air pressure is different in air pressure is different in different places.different places.

Wind is the movement of Wind is the movement of air. Wind happens because air. Wind happens because air pressure is different in air pressure is different in different places.different places.

An anemometer An anemometer (an/uh/mahm/ut/er) (an/uh/mahm/ut/er) measures wind speed.measures wind speed.

An anemometer An anemometer (an/uh/mahm/ut/er) (an/uh/mahm/ut/er) measures wind speed.measures wind speed.

A weather map is a map that A weather map is a map that shows weather data for a large shows weather data for a large area. The maps show area. The maps show temperatures, precipitation, temperatures, precipitation, warm and cold fronts, and areas warm and cold fronts, and areas of high and low air pressure.of high and low air pressure.

A weather map is a map that A weather map is a map that shows weather data for a large shows weather data for a large area. The maps show area. The maps show temperatures, precipitation, temperatures, precipitation, warm and cold fronts, and areas warm and cold fronts, and areas of high and low air pressure.of high and low air pressure.