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Objective: more scientific notation math

Objective: more scientific notation math. If it’s black, write it down. If it’s red, just read it and smile. Get calculators, pens or pencils and paper now. Here come some super duper big numbers…

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Objective: more scientific notation math

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  1. Objective: more scientific notation math If it’s black, write it down. If it’s red, just read it and smile. Get calculators, pens or pencils and paper now.

  2. Here come some super duper big numbers… How many stars are in the Milky Way Galaxy?(where our solar system is just a tiny speck of one star) We can only see about 2500 stars without a telescope. There are lots more than that though! Scientists say that there are approximately three hundred billion stars in our galaxy. Write that number both as a number and in scientific notation.

  3. Scientists say that there are approximately three hundred billion stars in our galaxy. Write that number both as a number and in scientific notation. 300,000,000,000 is how many stars in the Milky Way or we can write it as 3 x 1011 stars in the Milky Way.

  4. How many stars are in the Universe, the whole Universe? Scientists can’t see all of the Universe, but the estimate is three hundred sextillion, or: 300,000,000,000,000,000,000,000 (that’s a “3” with 23 zeros – watch the commas!) Write that in scientific notation

  5. How many stars are in the Universe, the whole Universe? Scientists can’t see all of the Universe, but the estimate is three hundred sextillion, or: 300,000,000,000,000,000,000,000 (that’s a “3” with 23 zeros – watch the commas!) Write that in scientific notation 3 x 1023 stars

  6. Let’s compare our Sun to two other stars that are noticeably bigger…

  7. Let’s compare our Sun to two other stars that are noticeably bigger…

  8. How big is the CanisMajoris Star? To fly the diameter, 1,827,000,000 miles, at 25,000 miles per hour, would take you more than 8 years! Size of CanisMajoris Star 1,827,000,000 miles in diameter SUN 938,000,000 miles To Saturn from Sun . Earth

  9. How far away is Pluto from the Sun? The distance is 4.6 Billion Miles, or, 4,600,000,000 miles. Write that as scientific notation. While you are waiting for everyone to finish, think about this: Earth to Pluto is about 93,000,000 miles closer than that. If you fly at 25,000 miles per hour in a rocket ship and if you left after school today, you would get there in about 21 years.

  10. How far away is Pluto from the Sun? The distance is 4.6 Billion Miles, or, 4,600,000,000 miles. Write that as scientific notation. 4.6 x 109 miles

  11. Last slide today… The next star to us is called Proxima Centauri It’s “only” 4.24 light years away. One light year is really 5,865,696,000,000 miles (more or less) To Proxima Centauri that’s 4.24 x 5,865,696,000,000 = 24,900,000,000,000 miles Convert that to scientific notation now.

  12. 24,900,000,000,000 miles 2.49 x 1013 miles • Just a thought: at 25,000 miles per hour, flying to Promixa Centauri would take you more than 113,000 years! • And you’d still have almost 300,000,000 more stars to visit just in this galaxy!

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