3Weather Instruments (Tools) Temperature- the measure of the amount of heat energy in the atmosphereMeasured using aTHERMOMETER
4Additional Weather Instruments Wind Speed is measured using an ANEMOMETERWind Direction is measured using aWEATHER VAIN.
5Additional Weather Instruments A RAIN GAUGE is used to measure the amount of precipitation.
6Precipitation Includes: RainSnowFormed by ice crystals*
7More types of Precipitation: Mixture of snow and rainSleetHailFormed by ice crystals*
8Air Masses and FrontsAir Masses: formed when air in the atmosphere is heated at the equator and cooled at the poles.Fronts: formed when two air masses of different temperatures and humidity* bump into each other.*Humidity is the amount of water vaporin the air.
9Types of Fronts Cold front Warm front Cold air mass pushes into a warm air mass.Warm air mass pushes into a cold air mass.
10Additional Weather Tools Air pressure is the result of the mass/weight of the air and temperature pushing on its surroundings. (atmospheric pressure)Measured usinga BAROMETER
11Do weather forecasters use air pressure to predict the weather? High pressure areas are formed when air is cooled.Low pressure is formed when air is warmed. Weather associated with low pressure areas are: clouds, rain, and wind.
24Spot the cloud!Rain bearing,storm clouds …..Cumulo-Nimbus
25Let’s Review It’s time to play the…Flyswatter Game
26Cirrus Clouds Cold Front Wind/Weather Vane Thermometer Hurricane High pressureSnowAir MassesCumulous CloudsLow pressurePrecipitationBarometerSleetCumulo-nimbus CloudsHailRain GaugeWarm FrontAir pressureCloudsThunderstormTornadoAnemometerStratus CloudsWeatherMeteorologistsTeacher should use the essential knowledge from the 4th grade science curriculum framework to ask questions.
27The ABC’s of WeatherDraw a letter from the bag. Share a word or phrase that begins with the letter to summarize weather.Tara Moore, Elementary Lead Science TeacherSuffolk Public SchoolsOctober 2005Some cloud slides adapted from John Harris, Radley College, UK