Weather ToolsWeather ToolsBrought to you by:Brought to you by:

Mrs. McGregorMrs. McGregor

• What are tools?

• Can you think of a tool that is used to measure weather?

ThermometerThermometer A tool used to measure temperatureA tool used to measure temperature

How hot or cold it is outsideHow hot or cold it is outside Thermometers have different scalesThermometers have different scales We measure in Fahrenheit!We measure in Fahrenheit!

BarometerBarometer

A tool used to measure air pressureA tool used to measure air pressure The weight of air pushing on the The weight of air pushing on the

earth’s atmosphereearth’s atmosphere

Think: Think:

Barbell= weightliftingBarbell= weightlifting

Bar= weight of airBar= weight of air

HygrometerHygrometer

A tool used to measure humidityA tool used to measure humidity How much water is in the air?How much water is in the air?

Think: h=humidityThink: h=humidity

h= hygrometerh= hygrometer

AnemometerAnemometer

A tool used to measure the wind A tool used to measure the wind speedspeed

How How fastfast is the wind blowing? is the wind blowing?Think: Ants= move fastThink: Ants= move fast

Anemometer= how fast wind is movingAnemometer= how fast wind is moving

Wind VaneWind Vane A tool used to measure the A tool used to measure the

DIRECTION of the windDIRECTION of the wind The arrow points in the direction The arrow points in the direction

from which the wind is blowingfrom which the wind is blowing

Think: wind vane = Think: wind vane =

rooster on roof!rooster on roof!

Rain GaugeRain Gauge

A tool used to measure the amount A tool used to measure the amount of rainfallof rainfall

How much rain have we received in How much rain have we received in Lewisville during the month of Lewisville during the month of February?February?

Katie wants to measure the Katie wants to measure the amount of moisture in the air. amount of moisture in the air. She does not want the water She does not want the water in the air to disorder her hair. in the air to disorder her hair. What instrument should she What instrument should she

use?use?

HYGROMETER!HYGROMETER!

Mrs. Hartman plans to go out Mrs. Hartman plans to go out over the weekend on her new over the weekend on her new sailboat. First, she must know sailboat. First, she must know how fast the wind is blowing how fast the wind is blowing to see if it’s appropriate to to see if it’s appropriate to

sail. What instrument should sail. What instrument should she use?she use?

ANEMOMETER!ANEMOMETER!

Mrs. Leab wants to make sure Mrs. Leab wants to make sure that she dresses Baby Joseph that she dresses Baby Joseph

correctly when she brings correctly when she brings him to visit us. In order for him to visit us. In order for

her to know the temperature her to know the temperature outside, what instrument outside, what instrument

should she use?should she use?

THERMOMETER!THERMOMETER!

Mr. Snow just bought a brand Mr. Snow just bought a brand new kite and he is anxious to new kite and he is anxious to

fly it. Before he flies it, he fly it. Before he flies it, he must be cognizant of the must be cognizant of the

DIRECTION of the wind. What DIRECTION of the wind. What instrument should he use?instrument should he use?

WIND VANE!WIND VANE!

A meteorologist observes A meteorologist observes some cumulonimbus clouds some cumulonimbus clouds outside. He speculates that outside. He speculates that there is LOW air pressure. there is LOW air pressure. What instrument should he What instrument should he

use to determine the air use to determine the air pressure?pressure?

BAROMETER!BAROMETER!

Ryan is working on his Ryan is working on his Science Fair project. He plans Science Fair project. He plans

to measure the amount of to measure the amount of rainfall that has fallen in his rainfall that has fallen in his neighborhood over the past neighborhood over the past two weeks. What instrument two weeks. What instrument

should he use?should he use?

RAIN GAUGE!RAIN GAUGE!