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EOSC - Lightning

I think some of the stuff that I took from the video is not actually needed for the class.
Quiz by mskp
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Last updated: February 10, 2023
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First submittedFebruary 10, 2023
Times taken14
Average score64.9%
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Hint
Answer
thunderstorms have postive and negative ...
charges
creating powerful ...
electric fields
leaders
electrically conductive channels
they try to ...
neutralize charges
cloud flashes
within the storm
also called ...
intra-cloud lightning
ground flashes
connects to the ground
also called ...
cloud to ground lightning
aka ...
CG
return stroke
brightest flash
how CG lightning works
negative step leader
 
positive leaders from ground
 
one connects
 
ions flow down
 
return stroke
this whole thing is called a ...
flash
air around lightning ...
explodes
and makes a ...
supersonic shockwave
which then becomes an ...
acoustic wave
this is called ...
thunder
recoil leaders form on ...
decayed branches
from ...
positive leaders
negative leaders with ground
-CG
after return stroke, ...
multiple return strokes
causing ...
flickering
called ...
a multi stroke CG flash
initiate between ...
mid level negative
and ...
smaller positive region near base
positive leader with ground
+CG
occur from ...
higher positive region
return stroke is ...
hotter
 
brighter
 
longer
because of the ...
greater distance
and so are ...
more dangerous
percent of ground flashes
5-10%
also ...
lack of branching
Hint
Answer
causes ...
smooth channels
sometimes called ...
branchless lightning
also primary cause of ...
natural wildfires
bolt from the blue
lightning from far away
most are ...
negative
to make a spark you need about how many volts?
3 billion
lightning vs cars
faraday cage
where ...
electricity goes around
% of people who survive a hit
90%
lightning and trees
BAD
 
exploding
 
side flash
 
ground currents
where is lightning?
florida
 
central africa
detection networks
crowd sourced
 
world wide
can use to find ...
storm direction
other detection
from space
from ...
weather satellites
which have ...
optical transient detectors
how to tell where lightning is
seconds between lightning and thunder
 
divide by 3
lightning safety
30/30 rule
which is ...
30 seconds
means ...
30 minutes inside beyond storm
safe places
metal vehicle
 
building
avoid
small structures
 
metallic objects
 
TREES
 
water
 
fields
 
hills
if out in open ...
do the lightning safety crouch
where you have ...
feet together
 
hands over ears
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