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Page 112 Lightning happens suddenly and is over in an instant. The speed of this event makes it hard to study. Benjamin Franklin was an American scientist in the 1700s who studied lightning, and he was lucky to survive his own experiment. He flew a kite in a storm to show that storm clouds carry electricity. | ||
| The Electric Franklin | ||
| Ben Franklin’s kite experiment is only one of many possible avenues to explore in this site about one of the great American inventors. ( http://www.ushistory.org/franklin/index.htm ) | ||
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| Lightning History | ||
| Visit this NASA site to find out about lightning and the people who have studied it. Find out why weather forecasting is so important to planning space flights. ( http://thunder.msfc.nasa.gov/primer/ ) | ||
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Page 121 The lemon battery you made was a “wet cell” battery. Another kind of battery is called a “dry cell.” Research the difference between these two kinds of batteries. Which kind will you find (a) in a car? (b) in a laptop computer? (c) in a flashlight? | ||
| Battery Up | ||
| Who knows batteries better than the people who make them? Energize your exploration of batteries. ( http://www.energizer.com/learning/howbatterieswork.asp ) | ||
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| Battery Facts | ||
| View a “monster” of an overview of batteries. This encyclopedia entry describes dry cell batteries, wet cell batteries, uses of batteries, and the historical development of batteries. ( http://www.factmonster.com/ce6/sci/A0806492.html ) | ||
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| Stored Energy and Batteries | ||
| Batteries are described on this web page, but you can investigate much more about energy if you wish. ( http://www.energyquest.ca.gov/story/chapter05.html ) | ||
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