weather part 5. weather part 5 weather tools and technology s4e4a. identify weather instruments and...
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Weather Part 5 Weather Tools and Technology
S4E4a. Identify weather instruments and explain how each is used in
gathering weather data and making forecasts. Weather Tools and
Technology
Before the weatherman on TV can tell us what the weather is going
to be tomorrow, he needs to check a few things. Weather Tools and
Technology
He needs to check the temperature, barometric pressure, humidity,
wind speed, wind direction, and look at the radar. Weather Tools
and Technology
Basically he needs to use his Weather Tools. Thermometer Weather
Tool: Thermometer
One of the first tools our weatherman will use is the Thermometer.
Weather Tool: Thermometer
A Thermometer tells us what the air temperature is. Weather Tool:
Thermometer
There are two different scales used to tell the temperature,
Celsius and Fahrenheit. Weather Tool: Thermometer
Using the Celsius scale Water Freezes at 0 and boils at 100.
Weather Tool: Thermometer
Using the Fahrenheit scale water freezes at 32 and boils at 212.
Barometer Weather Tool: Barometer
A Barometer measures atmospheric air pressure. Weather Tool:
Barometer
If you remember when a cold air mass is over the area it is called
a high pressure system. Weather Tool: Barometer
When a warm air mass is over the area it is called a low pressure
system. Weather Tool: Barometer
The terms high, and low pressure refer to the barometric pressure.
Weather Tool: Barometer
When the air above us is cool it falls to the ground, which
increases the air pressure. Weather Tool: Barometer
When the air above us is warm it raises upwards, which decreases
the air pressure. Weather Tool: Barometer
The barometer measures the changes in air pressure. Weather Tool:
Barometer
Lower pressure means there is warm moist air just right for rain or
storms. Weather Tool: Barometer
High pressure means there is cold dry air and with it brings fair
skies. Hygrometer Weather Tool: Hygrometer
A Hygrometer measures the humidity in the air. Weather Tool:
Hygrometer
Humidity refers to the amount of water vapor that is in the air.
Weather Tool: Hygrometer
The warmer the air is the more water vapor it can hold. Anemometer
Weather Tool: Anemometer
An Anemometer measure the wind speed. Weather Tool:
Anemometer
The cups on the wheel catch the wind much like a pin-wheel. Weather
Tool: Anemometer
The harder the wind blows, the faster the cups spin. Wind Vane
Weather Tool: Wind Vane
A Wind Vane tells us what direction the wind is currently blowing
from. Weather Tool: Wind Vane
It uses a weighted end and a fin, that allows the wind to push it
in the direction it is blowing. Rain Gauge Weather Tool: Rain
Gauge
A Rain Gauge is used to measure the amount of rainfall, or
precipitation, over a period of time. Weather Tool: Rain
Gauge
It really isnt anything more then a tube, with the inches marked
off on the side. Weather Tool: Rain Gauge
All you need to do is sit it outside and wait for it to rain. Then
measure the amount or water in the glass when it stops. Radar
Weather Tool: Radar Radar is a system that sends out pulses of
energy that bounce off of clouds and return to the radar. Weather
Tool: Radar A computer receives and processes the signals and
builds a picture of what the clouds look like. Weather Tool: Radar
The result looks like this. Weather Tool: GOES Along with Radar our
weatherman can also look at images taken by satellites. Weather
Tool: GOES This is a Geostationary Operational Environmental
Satellite, other wise known as GOES. Weather Tool: GOES It orbits
the planet at a distance of around 22,000 miles above the surface
of the Earth. Weather Tool: GOES GOES are highly advanced
observation platforms supplying detailed imagery of the Earth.
Weather Tool: GOES How advanced? Weather Tool: GOES There are some
400 military and civilian satellites orbiting above the Earth.
Weather Tool: GOES Satellites can take many different images of the
planet at the same time. Weather Tool: GOES Visible Clouds
Hurricane Katrina: August 29, 2005 at 1:15 pm Category Three
Hurricane. Copyright: National Oceanic and Atmospheric
Administration (NOAA) Visible Clouds Weather Tool: GOES Water Vapor
Weather Tool: GOES Infrared Weather Tool: GOES Satellites can be
positioned far enough away that we can see the whole planet at
once. Weather Tool: GOES Or multiple satellite images can be
combined with the use of computers, so we can see all over the
world, but in more detail. QUIZ TIME 1) _____ measures the wind
speed.
Write the name of the correct weather tool in the blank. Use your
notes. 1) _____ measures the wind speed. Anemometer 2) _____
measures the air temperature. Thermometer 3) _____ measures the
amount of precipitation. Rain Gauge 4) _____ measures the humidity.
Hygrometer 5) _____ measures the air pressure. Barometer
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