Archive for March, 2011

Don’t let gravity get you down

March 31, 2011

How inertia and gravity work on the space shuttle: Gravity tries to pull the space shuttle towards the earth, the shuttle moves forward in a straight line because of inertia.. I am going to describe this process with the following example: Imagine a little league baseball player hitting a home run. The ball flies out [...]

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Inventions and Discoveries

March 31, 2011

Aspirin…………………………Felix Hoffman……………………….1899 Battery…………………………Alexander Volta……………………..1799 Cereal………………………….John Will Kellogg……………………1894 Coca Cola……………………..John Pemberton…………………….1886 Computer (principles of)………Charles Babbage………………1834 Dynamite………………………Alfred Nobel………………………….1866 Fahrenheit Temperature Scale…Gabriel Fahrenheit………..1720 Flush Toilet……………………Sir John Harrington………………1589 Graphite Pencil………………..Conrad Gesner…………………….1565 Laser……………………………Charles Townes……………………..1958 Lawnmower……………………Edwin Beard Budding………….1830 Potato Chip…………………….George Crum………………………1853 Radio…………………………..Marconi………………………………..1895 Razor (shaving)………………..King Gillette………………………1901 Sandwiches……………………The Earl of Sandwich……………1762 Video Games…………………..Noland Bushnell…………………1972 Zipper………………………….Whitcomb Judson………………….1891

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Experiment: The Balloon Inflator

March 31, 2011

MATERIALS: A carbonated soft drink in a bottle, a balloon, and a twist tie from a bread or a garbage bag. WHAT TO DO: 1. Place the balloon over the mouth of the bottle and securing it to the bottle with the twist tie. 2. Have the adult hold the bottle and place their thumb [...]

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The Truth About Astronauts “Floating” in Space

March 31, 2011

Did you know that in my teachings with students and workshops for teachers I find that students and adults answer many of the same science questions wrong? I see this year after year when I discuss certain subjects with my students. In fact, before I wrote the first of my two books, my idea was [...]

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