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Scientific Notation Introduction Activity Go to the Power of Ten website using the Firefox web browser (click Control and the link below and the website will take you there): http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/ Click the manual button to stop the automatic display. Use the increase and decrease arrows to find the sizes below. Fill in the chart below for the following views: [you will have to ‘wrap’ the zeros for the larger numbers] View Exponent(m) Standard (km) Sci. notation (m) Sci. notation(km) Example: Southwestern USA 10+6 m 1000km 1.0 x 106 m 1.0 x 103 km Western Hemisphere of the Earth Earth and orbit of the moon 10+7 m 10,000km 1.0 x 107m 1.0 x 104km 10+9m 100000 km 1.0 x 109m 1.0 x 105km 10+13m 10,00000km 1.0 x 1013m 1.0 x 106km 10+16 Don’t bother to write in standard 1.0 x 1016m 1.0 x 1016km Write the number of light years 1.0 x 1021m 1.0 x 1021km Our solar system One light year Our Galaxy, The milky way 10+21 100,000 [note: conversion from m to km is three decimal places to the left 1000m = 1.0 km [standard] so 103m = 100km [exponent] and 1.0 x 103m = 1.0 x 100 km [scientific notation] always remember that 100 is equal to 1] [go to page 2] In scientific notation [NOT the exponential notation on the website] write the following: 1) The number of meters it takes light to travel in ONE year: 95,000, 000, 000,000,000 m 2) Approximately, how many kilometers light can travel in one year: 950,000,000,000km 3) The width of the earth [do not use the exponential notation on the website] 8000m 4) The distance –in light years- from which you can see the local group of galaxies, including ours, the Milky way 10,0000km 5) The number of meters light can travel in 10 million years. 100 light years 6) The number of kilometers light can travel in 10 million years. 5 million km 7) A light year is exactly 9.46 million million kilometers. 10 million light year 8) A light year is exactly how many meters? 10+23 9) The closest star to Earth is Proxima Centauri at about 4.3 light years away. How many kilometers away is this star? 10+14