World 1-5 Scientific Notation

When numbers get really ______ or For this reason we use Scientific Notation. really ______ it is inconvenient to write out all of the zeros. Big small

eg. 1 Express using scientific notation b) = 4.2 /10000 = 4.2 x because there are 4 places to the left of the decimal. a)5600 POSITIVE EXPONENT NEGATIVE EXPONENT =5.6 x 1000 =5.6 x because there are There are 3 places to the right of the decimal.

“Use the video link below to help you complete the table on the following page.”

Table 1 - Positive Exponents Planets and Stars. Decimal NotationScientific Notation Earth Jupiter Sun Aldebaran Betelgeuse VV Cephei

Solutions Decimal NotationScientific Notation Earth km1.3 x 10 4 km Jupiter km1.4 x 10 5 km Sun km1.4 x 10 6 km Aldebaran km6.0 x 10 7 km Betelgeuse km9.0 x 10 8 km VV Cephei km2.6 x 10 9 km

“Use the interactive link below to help you complete the table on the following page.”

Table 2 - Negative Exponents Cells, Viruses and Proteins Decimal NotationScientific Notation Salt Grain0.005 m Skin Cell m Chromosome m HIV Virus m Hepatitis B m Water Atom m

Solutions Decimal NotationScientific Notation Salt Grain0.005 m5.0 x m Skin Cell x m Chromosome x km HIV Virus x km Hepatitis B x km Water Atom x km

Homework pg. 40 #4-6, 8-9