Unit_6_Group_3

Unit_6_Group_3 - 1. Lightning occurs when large amounts of...

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1. Lightning occurs when large amounts of electric charge flow between the clouds and the ground. a. Lightning is most likely to strike when a cloud and the ground beneath it have accumulated large opposite charges. Why is lightning unlikely when they have large like charges? Lighting is unlikely when you have large like charges because like charges repel, so there will be no force to pull the charges together. The lightning has a negative charge and wants to escape to an area that has a low negative charge. If the land were to have a large negative charge then it will continue building until it finds an area that has a large positive charge instead. b. The atmosphere does a great deal of work in creating the separated charge that produces lightning. Show that it takes work to move positive charge from the negatively charged ground to the positively charged cloud overhead. Charges that are close together attract each other very strongly so in order the separate them it takes a very large force. This large force takes a lot of energy to create. c. When enough opposite charge has accumulated on the ground and in the cloud above it, lightning will strike. One indication that this dangerous charge accumulation has occurred is that your hair begins to stand up. Explain this effect.
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This note was uploaded on 06/21/2010 for the course PHY 120 taught by Professor D.nolen during the Summer '09 term at Parkland.

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Unit_6_Group_3 - 1. Lightning occurs when large amounts of...

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