Science 9/1/10

Bell Question: Determine the number of significant figures:

1.  .00249            3

2.  860900.0        7

3.  8675309         7

Scientific Notation- used to write very large or very small numbers

Large Numbers in Scientific Notation:

1.  Write down all significant figures

2.  Place a decimal point between the first and second number

3.  Raise the number to the tenth power to the number of places you count from the right

                 9476400000        -        9.4764x10e9

                 6.72349x10e10    -        67249000000

Small Numbers in Scientific Notation:

1.  Write down all significant figures

2.  Place a decimal point between the first and second number

3.  Raise the number to the left

4.  Raise the tenth's power to the negative exponent representing large numbers in scientific notation

                  .00000864         -          8.64x10e-6

                   6.983x10e7      -           .000006983