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Lightning ISS
Chapter 20 : Lightning
Have you ever been struck by lightning (or had a close
encounter of the first, second, or third kind) ?
A. NoB. Close enough for a good scareC. in a house or car that was hitD. Yes – felt it (zap or tingling)
E. Yes – ouch
What is Lightning
?
The atmosphere normally has a voltage gradient of 100
volts/meter…
… which may sound like a lot, but what
happens when you stand one
meter from a 110 volt outlet ?
It takes about 1,000,000 volts/meter
to cause a spark.That’s 10,000 volts
per centimeter.
Who is most likely to be struck by lightning ? A. Zippy the pinheadB. Stan the round headC. Johnny FlatheadD. They’re all equally likely to be struck(assume they’re all the same height and made out of the same stuff)
Who is most likely to be struck by lightning ? A. Zippy the pinheadB. Stan the round headC. Johnny FlatheadD. They’re all equally likely to be struck(assume they’re all the same height and made out of the same stuff)
What causes electrical charges in clouds ?
+
▬
+
What is Colorado’s most lethal weather phenomena in a typical
year?A. FloodsB. Tornadoes &
HurricanesC. Chinook wind stormsD. LightningE. Avalanches & Blizzards
What is Colorado’s most lethal weather phenomena in a typical
year?A. Floods (on average)
B. Tornadoes & HurricanesC. Chinook wind stormsD. Lightning (typically)
E. Avalanches & Blizzards (sometimes)
Most fatal lightning strikes occur…(based on a study of 8 cases in Colorado)
A. With the first lightning strike in the areaB. When lightning is increasing before the rainC. At the height of the storm
(peak lightning and rain)D. After the rain ends and the storm is moving onE. With the last lightning strike in the area
Most fatal lightning strikes occur…(based on a study of 8 cases in Colorado)
A. With the first lightning strike in the area
What’s this mean?You should anticipate lightning before it occurs in
your area! Watch the skies – clouds development and motion. When you hear thunder and lightning is nearby, the danger is already on top of you.
How does lightning kill ?
A. Severe burnsB. Blast trauma (head injuries)C. External bleeding from woundsD. Internal bleeding from ruptured blood
vesselsE. Cardiac arrest (heart attack)
How does lightning kill ?
A. Severe burnsB. Blast trauma (head injuries)C. External bleeding from woundsD. Internal bleeding from ruptured blood
vesselsE. Cardiac arrest (heart attack)
Get (or give)
CPR !!!
CPR =CardioPulmonary Resuscitation
Unless you like people pounding on your chest and blowing air into your lungs, it’s better to avoid needing
CPR.
How do you avoid lightning ?
If you’re outside and lightning is nearby, what is your BEST option?
A. Hold up a stick as a lightning rodB. Get under a treeC. Run away from the storm as fast as you canD. Stand on a rubber mat or rubber shoesE. Get into a car
Now here’s a smart idea…
Who, me ????
No !
That’s not what I would do !(try squatting in a thunderstorm for more than a few seconds).
Run like h*** to the closest relative shelter, even if it takes the duration of the storm to get
there.Most of the time you won’t be in
contact with the ground.
www.lightningsafety.noaa.gov
• =
Sprites and Jets (ISS-lyn)
