Transcript The Scientific Method

The Scientific Method
The scientific method is a step-by-step way of solving
problems.
You will see different steps, depending on where you look, but
they are always similar.
Scientific Notation
2.99 x 108 m/s
=
299,000,000 m/s
Express as your first number, then a decimal, then your remaining
numbers. “x 10n” tells you the decimal is actually n spots to the
right. If n is negative, you move the decimal that many spots to
the left.
Express in scientific notation:
a. 346.46
b. .00010034
power
prefix
abbreviation
10-18
atto-
a
10-15
femto-
f
10-12
pico-
10-9
The Metric System (s.i.)
Distance:
meter
p
Mass:
kilogram
nano-
n
liter
micro-
m
Volume:
10-6
10-3
milli-
m
Time:
second
10-2
centi-
c
10-1
deci-
d
1
101
base
Deka-
D, Dk or Da
102
Hecto-
H
103
Kilo-
K
106
Mega-
M
109
Giga-
G
1012
Tera-
T
1015
Peta-
P
1018
Exa-
E
Converting Metric Units
Count the number of exponent steps you need to move. If
moving up the chart, move the decimal that many spots to the
right, down the chart, move the decimal to the left. Put your
answer back in correct scientific notation.
Convert the following:
a. 3.34 x 105 Mg into Kg
b. 1056 cm into m
c. 4.189 x 10-4 ml into cl
d. .00002354 g into mg
Math operations with scientific notation
Adding/subtracting like exponents
2.1 x 103g + 1.0 x 103g =
Adding/subtracting unlike exponents
3.5 x 102m + 1.2 x 103m =
Adding/subtracting unlike exponents and units
2.5 x 103dl – 1.3 x 102cl =
Multiplying/dividing
(2.0 x 102m) x (3.0 x 104m) =
(2.0 x 102m) / (3.0 x 104m) =
(2.0 x 102m) x (3.0 x 104cm) =
(2.0 x 102m) x (3.0 x 104s) =
(2.0 x 102m) / (3.0 x 104s) =