This document discusses tools used by meteorologists to measure weather conditions. It describes how thermometers measure temperature, wind vanes measure wind direction, anemometers measure wind speed, barometers measure air pressure, hygrometers measure humidity, and rain gauges measure precipitation. Meteorologists use these tools to study and report on weather.

2.  http://video.nationalgeographic.com/video/s
cience/earth-sci/climate-weather-sci/

3.  Climate is what the average weather conditions
of a place over a long period of time.

4.  Weather is the conditions of the
atmosphere at any given place at any
given time. Weather happens in the
lowest part of the atmosphere called the
troposphere.
 The weather conditions are measured
using special tools or instruments.
 Meteorologists are scientist who study
and report the weather.

5. Temperature
Wind Speed and Direction
Air Pressure
Humidity
Precipitation

7. http://www.youtube.com/watch?v=f
yhEiazvHLw

8.  A thermometer measures
 the amount of heat energy
 in the air. Temperature
 makes different kinds of
 precipitation fall. When
 it is above 32 F degrees or 0
 degrees C , it rains. When it is
below
 below 32 degrees F or 0 degrees
degre C it will sleet or snow.


Temperature is measured in Fahrenheit or Celsius.

9.  A wind vane measures the
 direction the wind is coming
 from. The fin is pushed by the
 wind, causing the pointed end to
 point in the direction the wind is
 coming from. Wind direction
 tells us what direction weather
is moving in.
Wind direction is measured as
North, South, East, or West.

10. An anemometer measures the speed of the wind.
Wind speed is caused by differences in air
temperature and air pressure.
Wind speed is measured in Miles per hour or
Kilometers per hour.

11. A barometer measures air
pressure. Rising air pressure
usually means fair weather.
falling air pressure usually
means cloudy, rainy
conditions. The lower the
reading the stormier it is.
Air pressure is measured in millibars.

12. When the barometer is we
Because we get to go

13. When the barometer is
We
Because we have to stay

14. A hygrometer measures the amount
of water vapor that is in the air. We
call this humidity. When it is more
humid, you feel sticky and hotter.
When it is 100% humidity, the sweat
on your body cannot evaporate so
you feel hotter. It is the evaporation
of your sweat that helps cool your
body. So be careful on a humid day.
You could over heat easily!

15. A rain gauge is used to measure
the amount of precipitation that
falls. You can measure the
amount of rain in inches or
centimeters using any kind of
cylinder. You can measure the
amount of snow that falls using a
ruler in inches or centimeters.