Scientific Notation

Warm Up List three things you saw today that you think is related to physics and explain why.

Speed Solving In the space provided on your Cornell notes, solve the following questions as quick and accurately as you can. You have one minute / x x

Speed Solving Answers Was the speed solving easy or hard? What made it hard? What made it easy?

What is the scientific notation? In science, we often deal with very large or very small numbers, scientific notation is a way to write these numbers easily in decimal form –Often times, this means getting rid of all the zeros in the number

How does the scientific notation work? Decimal: you should only have one number in front of the decimal point Exponent: this expresses how many zeros are in the number and can only be in whole numbers There are always two parts of the scientific notation 3.5 x 10 8

What does the scientific notation mean? 3.5 x 10 8 The exponent is positive 8, which means you move the decimal point 8 places to the right In all the empty places you add zeros, so it becomes – x The exponent is negative 8, which means you move the decimal point 8 places to the left In all the empty places you add zeros, so it becomes – The decimal number is your starting point. You know how many places and which way to move the decimal point depending on the exponent.

How do you multiply and divide with scientific notation? You can only multiply and divide when all numbers involved are in scientific notation When you multiply, you multiply the decimals and add the exponents When you divide, you divide the decimals and subtract the exponents

Let’s see how this could have helped your speed solve… / x x

Can you add and subtract with scientific notation? Yes you can, but only if the two numbers have the same exponents We will not be practicing this in physics :)

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