About the Author

Michael Doig is a science teacher, web developer, and avid traveler who lives in Brooklyn, NY. He graduated from the University of Hawaii with a degree in Zoology and from Pace University with a Masters of Science in Teaching. He currently teaches Earth Science in a New York public high school.

ScienceBoom Episode #5 – Barometric Pressure and Temperature

Barometric pressure is responsible for much of our weather. In this episode, I travel to Hawaii so we can explore the relationship between barometric pressure and temperature.

Host: Michael Doig
Duration: 4:11

Materials

Can of Compressed AIr – Can be purchased at any office supply store for around $6.

Raytek MT4 Mini Infrared Thermometer – The ability to take the temperature of just about anything without touching it is amazing, not to mention entertaining. I took a reading of my desklamp and found out the bulb was 212?F, Wow!

Casio Men’s Pathfinder Triple Sensor Altimeter/Barometer/ Digital Compass Watch – For the money, this watch is a steal. Barometer, compass and thermometer all in one place. Great for hiking or scientific exploration. The manual is really dense, but operating the watch was relatively easy. My biggest problem was with the temperature, it was constantly bouncing around.

Barometric Pressure Fast Facts

  • A column of air one square inch in cross-section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 lbs per square inch or 1013.25 mb.
  • An increase in elevation results in a decrease in barometeric pressure.
  • As pressure decreases, temperature also decreases.

Special thanks to Mike Ogasawara and David Doig.

RSS Feed for This Post5 Comment(s)

  1. gravatarHerb Lippe | Oct 31, 2009 | Reply

    Hi Mike!
    I miss your summer workshops with John. Regarding the Casio triple sensor watch you used, in #5. I bought one at BJs about 3 weeks ago. Had a $30 off coupon so it cost me $70.
    I get very erratic readings on the altimeter. I live at sea level here in Pt. Lookout, NY so I’m constantly adjusting the setting for 0 feet. According to the instruction book, the altimeter sensors are influenced by the barometric pressure which could be why it’s always off.

    Regarding Episode #5. It’s a good one and I’ll use it for my 6th grade weather class. Thanks.

  2. gravatarMichael Doig | Oct 31, 2009 | Reply

    Hey Herb,
    I was just out in Point Lookout, and I thought of you.

    I had the same issues with having to calibrate the barometer before every use, but for $100 ($70 is even better) it is worth it. I looked around for a portable barometer and this watch was by the most economical choice.

    Good luck with your class and thanks for watching!

  3. gravatarHerb Lippe | Nov 11, 2009 | Reply

    Hi Mike,
    Too bad you didn’t couldn’t stop by. Y’know, I look for resources online everyday. Tough to find really good stuff like yours that matches the curricula I work with (6th & 8th.) A lot of the stuff is physical science. I Guess it’s easier. If anyone reads this, perhaps they could think of developing Michael Doig-type videos for other areas of the “spiral curriculum?”
    I’ve made some really good PPTs for Punnett Squares & Pedigree charts if anyone can use them.

  4. gravatarRuth Wilson | Oct 1, 2011 | Reply

    I would love to view your powerpoints. I teach biology and physical science this year. So, any powerpoints or material yo may have to lighten my prep time is GREATLY appreciated.

    Thanks so much,
    Ruth Wilson

  5. gravatarHerb Lippe | Oct 26, 2011 | Reply

    Sorry Ruth,
    I retired July, 2010 and I think I deleted most of my science resource files. If I find them, I’ll get them to you.
    Herb

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