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TEMA:
Estación Meteorológica
GRADO: Elemental, 5-8
EQUIPAMIENTO: HOBO Pro RH/Temp (HO8-032-08)
HOBO Light Intensity (HLI)
HOBO Event (HO7-002-04)
Caja
Sumergible
Pluviómetro
Protector de Lluvia
Introducción:
The idea behind this lab is to build a
simple weather station. Leave some HOBO data loggers outside for about a
week, while they record temperature, relative humidity, light intensity and
rainfall. During the week, students keep track of the weather and try to
anticipate how the weather factors being logged will respond.
Materiales:
A HOBO Pro Series Relative Humidity, Temperature data
logger
(HO8-032-08)
A HOBO light intensity data logger (HLI)
A HOBO Event data logger (HO7-002-04)
Submersible case
Rain gauge
Rain shield
Hipótesis:
What sorts of patterns might you expect
to see regardless of the actual weather this week? What sorts of readings
would you expect to get on a sunny day? A cloudy day? A rainy day? Your
newspaper will have a section that predicts the temperature for the day. It
might also mention the relative humidity level. How close do you think it
will be to guessing the actual weather conditions?
Procedimiento:
This is a very simple experiment that
can be set up in a short amount of time and then left for a while as data is
accumulated. Find a convenient spot outside where you can set up all three
loggers. You might want to find a spot that gets direct sunlight all day, but
this isn't absolutely necessary. The roof would be an ideal location, but
right outside the classroom should be adequate. Launch your HOBOs for a week
(72-second intervals) and then place them outside. The Pro Series logger (HO8-032-08)
should be used for measuring temperature and humidity, while the light
intensity logger should obviously be used for measuring light intensity. You
must assemble the rain shield to prevent rain from falling directly on the
Pro Series humidity logger. The submersible case can be used to keep the
light intensity logger dry.
Over the course of the week, students should keep track of
the predicted weather (by the local newspaper perhaps) and the actual
weather. As a homework assignment for the final day of recording, you could
have the students draw the graphs that they expect to see. The general shape
of the graph is what is important here. This is especially true with regard
to light intensity, as students are unlikely to know what a reasonable light
intensity reading would be for different times of the day. Once the week of
recording data is over, check out the results. Do they fit in with what you
observed over the course of the week?
Análisis:
What differences do you see between
night and day? Is it easy to tell them apart from the graph? Is there a
correlation between light intensity and temperature? At what time of day does
the temperature reach its peak? What about light intensity? How does humidity
fit into the picture? Just by looking at the graph, can you tell the
difference between a cloudy day and a sunny day?
Were the weather predictions correct, or at least close?
How about your own graphs? Did any of the data from the HOBOs surprise you?
Algo Extra:
Designing a more elaborate weather station
could be a fun activity for the whole class. A wooden box could hold the rain
gauge and the light intensity logger (with a glass shield to keep it dry).
The Pro Series RH/Temp logger and its rain shield could be attached along
with a simple weather vane to pinpoint wind direction.
* Nota
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