© Sandrine New
To study the weather, meteorologists record and analyze data. It is possible to become an amateur meteorologist without spending a fortune on measuring instruments in constructing its own weather station and taking note of his actions.
This series of articles showing how to build some instruments for measuring weather station. While not extremely accurate, of course, these instruments may nevertheless be used to measure weather conditions and to provide time to come.
Most instruments are simple enough to be built with children - sometimes with a little help - for a project to do at home or at school.
This article speaks of instruments used to measure rainfall and intensity of solar radiation.
1) Measuring Precipitation (Build a Rain Gauge)
The amount of water or snow that has fallen is measured with a rain gauge. Regularly checking the level of the gauge, we can know how much rain fell during a rainstorm one day, week, or month.
Puviomètre a measuring instrument is a very easy to build, but be careful in his choice of location: Any graduated glass left outside can serve as a gauge, but like many showers are accompanied by wind, it should well secured the gauge. In addition, it must be placed in an open area without the overhanging (as a tree or roof ...), which could change the amount of water that enters the gauge. A rain gauge can be placed, for example, on a pole or along a fence, away from any building.
Two examples of rain gauges build:
Model A:
must:
- a glass measuring cup or container with straight edges, which can be graduated.
- a rule
- tape
- (permanent marker)
1. If a single container is used, it must be the graduate (starting from the bottom) with the marker and a ruler or place within the rule so that it rests at the bottom.
2. Attach the ruler in place with adhesive tape.
If the scale of the rule not begin exactly at the edge, it will either keep some water in the bottom of the gauge, 0 to the rule, or compensate by adding (0.5 or 1 cm ...) to your measurements. It is possible, alternatively, to set the rules outside of the container (which must be transparent) so that 0 corresponds to the bottom of the gauge.
Model B:
must:
- long plastic bottle with straight edges
- a rule
- sharp scissors
Instructions:
1. Cut the neck of the plastic bottle in his mouth environ10 cm.
2. Place the cut down on the body of the bottle to form a funnel. The funnel helps direct water into the bottle and limit evaporation.
3. Burying the base of the bottle into the ground in an open area away from any tree or building. Use a ruler to measure the amount of rain that fell each day.
To measure the amount of snow, the funnel is not helpful. Use the following approximate conversion: 10 cm of snow = 1 cm of water.
2) Measuring Solar Energy (Building a Radiometer)
A radiometer is an instrument that uses refraction and absorption to measure the energy Sun.
must:
- a pen (or marker) black
- paper packaging of chewing gum
- a pot of jam
- a pencil (or stick with dimensions close)
- the glue
-
thread - a match used
-
scissors - tape
Instructions:
1. With the pen, colored in black the non-metallized paper of chewing gum. Cut the paper into 4 equal pieces, measuring about 2cm x 2.5 cm each.
2. Glue the 4 pieces at one end of the match, one on each side, as to form the blades of a propeller or the spokes of a bicycle. The shiny side should not face each other.
3. Hook the wire to the other end of the match (if necessary, make a small incision in the match to keep the wire from slipping). Wrap the loose end of wire around the pencil. Secure with tape.
4. Suspend the radiometer in the cookie jar (pencil horizontally). Place the pot dan a sunny location.
Explanations:
The radiometer turns when solar energy is absorbed by black surfaces and refracted by shiny surfaces. More solar energy is stronger, it turns quickly.
Sources:
http://www.fi.edu/weather/todo/todo.html
M ake Y o O wn W eather S tation
http://www.miamisci.org/hurricane/weathertools .
Weather html tools
http://www.meteorologic.net/construire-sa-station-meteo.php
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