2
RIDDLES
Do you like Riddles? TIME OUT! For Science:
Barometer An instrument that measure the pressure of air Important for weather... Usually:
High(er) pressure means good weather Low(er) pressure means bad weather
Including tornadoes and hurricanes!
The Riddle: What is another name for a Barometer?
5
GRAPH
And when you graph Altitude (from GPS) versus time (from GPS) Barometric pressure (from barometer) vs. time (from
GPS) It looks like this:
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GRAPH RE-REDUX
And stretch it?
Then: 97600 Pascals ==same place as== 1275 feet 97275 Pascals ==same place as== 1375 feet 96950 Pascals ==same place as== 1475 feet
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THE MORAL OF THE STORY
So we could tell… … the altitude…
… if we knew the barometric pressure!
So now do you know… What’s another name for a barometer?
An ALTIMETER!
(Disclaimer: It’s not quite that simple… but close: http://www.eaa1000.av.org/technicl/instcal/instcal.htm) Easier
than a Tape
Measure!!