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Transcript
Notes Term 1 Unit 2 Day 1
Objective: Write numbers in scientific notation.
Make unit conversions.
NAME: _______________________
CONVERSIONS PWT
Units: In science EVERY number comes with a unit.
Measurements:
English System: RIDICULOUS
Metric System: Based on the number ten so easy to work with.
Standard Units: Time = second (s)
Length = meter (m)
Mass = kilogram (kg)
Temperature = Kelvin (K)
Volume = Liter (L)
Prefixes:
The prefix tells you how
far to shift the decimal
forward or backward.
Letter
k
M
G
T
c
m
n
Name
kilo
Mega
giga
tera
centi
milli
micro
nano
Number of Zeroes
3
6
9
12
-2
-3
-6
-9
Big/Small
1000x bigger
million x
billion x
trillion x
100x smaller
1000 x
million x
billion x
Play the
Scientific
notation
song here.
Scientific Notation
Play the
Scientific
notation
challenge
game here.
Long numbers can be written in a simplified form. We can tell the viewer how far to slide the
decimal forward or backward by multiplying by powers of ten
STEPS:
1. First locate the decimal.
2. Next move the decimal until there is only ONE number in front of it.
3. Count the number of spaces you moved the decimal. This is the number that goes with the 10. If the
original number is BIG , the exponent will be positive. If the original number is SMALL the
exponent will be negative.
4. Keep only the first three numbers that you see.
5. Write the final number.
1234567.89 becomes 1.23 x 106 or 1.23E6
The Number One: To change the units on a measurement without changing the measurement itself
you must multiply by the number ____one______.
Explain 1 here…
Notes Term 1 Unit 2 Day 1
NAME: _______________________
Dimensional Analysis (Train Tracks)
STRATEGY: If you have a unit you don’t want to have then. . . . Run it over.
Basic Conversion: How many
seconds are in a week?
1 wk
7 days 24 hrs 60 min 60 s
1 wk
Practice: If you walk one
million inches, how many
miles is that?
1,000,000 in
Two-Layer Conversion: My
corn grows 5 in / week.
How many feet / year is that?
5 in
wk
Practice: My dog can run 13 ft / s. 13 ft
How many miles / hour is that?
s
1 days 1 hrs
1min
1 ft
1 mi
12 in
5280 ft
1 ft
1 wk
365 days
12 in
7 days 1 yr
1 mi
60 s
5280 ft 1 min
= 604,800 s
= 15.8 miles
= 21.7 ft
yr
60 min
= 8.86 mi
1 hr
hr
Metric Conversions
The PREFIX is the . . . . First letter (it adjusts the size).
The BASE unit is the . . .Second letter (it names the unit).
Basic Conversion: How many
millimeters are in 3.75 meters?
3.75 m 1 mm
Always Remember:
1. Prefix gets the
one.
2. Base unit gets
10 to the exponent on the yellow card.
3. Always
convert to base units first.
= 3750 mm
10-3m
Practice: How many Joules are in 5.6 kiloJoules?
5.6 kJ
103 J
= 5600 J
1kJ
Multiple Step Conversion: How
many kilobytes are in 4.5 gigabytes?
Practice: Convert 3,085 milliLiters
to deciLiters.
4.5 Gb 109b
1kb
1 Gb
103b
3085 mL
= 4,500,000 kb
10-3 L
1 dL
1 mL
10-1 L
Combined Conversion: If I am 1.77 meters 1.77 m 1 cm
1 in
1 ft
tall, how many feet is that?
10-2 m 2.54 cm 12 in
Practice: How many minutes
are in two million s ?
2,000,000 s
10-6 s
1 s
1 min
60 s
= 30.9 dL
= 5.81 ft
= 0.0333 min