Sunday, May 15, 2011

What is Lightning?

As we study weather and take a look at all that it entails, one often asks, what causes the lightning we see in the sky?  What IS lightning?  Check out the following link and learn all about what lightning is.




Lightning
Leave a post about what you learned.  What is lightning?  What causes it to occur?  What was the most interesting thing you read on this site?  How far away can you see lightning?  What is cloud-to-ground lightning?  What is intercloud lightning?  What is high altitude lightning?  What is St. Elmo's Fire?  How can you tell how far away a storm is?  What are some lightning safety tips?

3 comments:

Sean Laake said...

Lightning is a bright flash of electricity from clouds due to negatively charged particles reacting to the positively charged ground. It causes more deaths and injuries than hurricanes and Tornadoes. You can see lightning up to 100 miles away, but you can only hear thunder at about 15 miles away, depending on the location. Cloud-To-Ground lightning is when a bolt of lightning makes contact with the ground, this is the most dangerous type of lightning. Intercloud lightning is the most common type when there is Negative(-) and Positive(+) particles in the cloud and the lightning goes off inside ofthe cloud, not to the ground.St. Elmo is when positive charged particles react on the ground with negative charges. They are seen as a blue or greenish glow above pointed objects on the ground. Count how many seconds when you see lightning and stop when you hear thunder. Divide the number of seconds by two and you get the number of miles. High Altitude lightning is when there is lightning above the cloud, you cant see them on the ground, but they are also called Blue Jets, Red Sprites, and Green Elves. They are seen above the cloud. If you see dark clouds, St. Elmo's fire, and you hear thunder,you should head indoors or into shelter. If you see lightning very close, get on your hands and knees, tuck your head in, and hope for the best. Lightning has astounded us for years, we see it in horror movies, movies in scenes where there is a great battle like Lion King, and we see it in pirate and sea stories in bad weather.

johnsholly said...

lightning is a very bright flash of electricity that comes from the clouds in the sky that is due to the negativley charged partacles reacting to the positivly charged ground. it might cause more deaths than hurricanes and tornadoes.you may be able to see lightning from 100 miles away,but you can only hear it 15 miles away.if you see lightning very close get on your hands and knees and tuck your head in

Unknown said...

Lightning is a bolt of electricity that stars from the ground and goes up and it comes right back down. When it comes down that ios when you can see it.