Meteorologists use different tools to collect weather data that they use to make a forecast.
How is weather data gathered? / How do meteorologists forecast the weather?
What is a rain gauge?
Measures air pressure
Barometer
Measures the speed of wind. Usually a spinning top that rotates from the wind.
What is an anemometer?
______ is the state of the atmosphere at a specific time and place
What is the definition of weather? (Weather)
Do you recognize the weather feature shown in the picture?
Hurricane Wilma
Wind is caused by movement of air ____________
from high pressure to low pressure
What is this used for?
Forecasting the weather
Measures the direction of the wind
What is a wind/weather vane?
When air moves from high-pressure to low-pressure areas
Wind?
How can you know what the weather will be before it happens?
Weather Forecast
What does this measure?
Rain precipitation
Based on the chart, what type of weather would you expect on Thursday and Friday?
Barometric (Air) Pressure in Union
Monday: 31.25 in
Tuesday: 32.50 in
Wednesday: 38.13 in
Thursday 28.01 in
Friday 25.02 in
Stormy
Measures how hot or cold
What is a thermometer?
What does a change in air pressure indicate?
-change in weather
-change in season
-movement of the earth
Change in weather
measures temperature; atmospheric pressure; Wind direction; Wind speed; Humidity
What do weather tools measure?
Warm air rising causes a low-pressure area; cold air dropping causes a high-pressure area. The instrument that meteorologists use to measure the air pressure is the _____
What two weather tools would a meteorologist use to collect wind direction and wind speed data?
weather vane + anemometer
Some large tools are satellite and _____
(Hint act. 8)
What is radar?
Orbits and takes pictures of the earth
What is a satelite?
What do you predict the average wind speed will be next June (These are anemometers)
I would expect the average wind speed will be about 7 mph
The teacher asks the students what the weather is like today, and Heather answers hot. What are some parts of weather besides temperature that she could have mentioned?
-air composition and humidity
-wind speed and precipitation
-air pressure and air density
Wind speed and precipitation
Measures water vapor content in the air, also known as humidity.
What is a hygrometer?
Weather forecasting can be categorized into two types. __-___ forecasting and ___-____ forecasting.