Download 10/13 Daily Catalyst

1/20 Daily Catalyst Pg. 6 Conversions
 Kayla plant two elodea plants in two separate pots. Both receive
the same amount of sunlight and water. One plant is watered
with water (pH=9) and the other plant is watered with water
(pH= 2). The height of the plants are measured over a month.
 1. What is the IV variable?
 2. What is the DV variable?
 3. What are the constant variables?
 4. Generate a possible title for the graph
to the right:
1/20 Daily Catalyst Pg. 6 Conversions
 Kayla plant two elodea plants in two separate pots. Both receive the same
amount of sunlight and water. One plant is watered with water (pH=9) and
the other plant is watered with water (pH= 2). The height of the plants are
measured over a month.
 1. What is the IV variable?
 Acid water (pH=2) and basic water (pH=9)
 2. What is the DV variable?
 Height
 3. What are the constant variables?
 Sunlight and amount of water
 4. Generate a possible title for the graph
to the right:
 People’s favorite Skittle flavors.
1/20 Daily Catalyst Pg. 6 Conversions
 Syllabus contract is overdue and needs to be turned in
 Unit Test #1 on Friday
 Quiz #2 data:
Average
Top Scorers:
1st Period
1.93
Tashtoni, Rilda,
Odalys, Christian
2nd Period
2.11
Brian, Eva, Amani,
Wyatt, Chase,
Kayla, Daniel V.
 Make-up’s today at lunch
1/20 Daily Catalyst Pg. 6 Conversions
 Daily Catalyst
 Class Business
 Conversion notes
 Conversion practice
 Exit Ticket #3
1/20 Daily Objective
 Today, we will be able to utilize mathematics,
organizational tools, and graphing skills to solve
problems and interpret data.
Conversions in Biology
 Scientists throughout the world use the metric
system to make measurements. The metric
system is also used in everyday life virtually
everywhere except the United States.
 Can you think of an exception?
Metric System
 Metric units commonly used in biology include:
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 Key Points #1: Common Units
meter (m)—length
liter (L)—volume
kilogram (kg)—mass
degree Celsius (C)—temperature
Metric System
 Unlike the English system with which you are already
familiar, the metric system is based on units of ten.
 What else is based on the unit of ten system?
Conversions
 We convert between units depending on what we are
measuring.
Decimal Placement
 Key Point #2: Decimal Placement
Decimal Placement
Metric Conversions
Ladder Method
Ladder Method
1
2
KILO
1000
Units
3
HECTO
100
Units
DEKA
10
Units
DECI
0.1
Unit
Meters
Liters
Grams
How do you use the “ladder” method?
1st – Determine your starting point.
2nd – Count the “jumps” to your ending point.
3rd – Move the decimal the same number of
jumps in the same direction.
CENTI
0.01
Unit
MILLI
0.001
Unit
4 km = _________ m
Starting Point
Ending Point
How many jumps does it take?
4. __. __. __. = 4000 m
1
2
3
Ladder Method
KILO
1000
Units
3
HECTO
100
Units
2
DEKA
10
Units
1
DECI
0.1
Unit
Meters
Liters
Grams
How do you use the “ladder” method?
1st – Determine your starting point.
2nd – Count the “jumps” to your ending point.
3rd – Move the decimal the same number of
jumps in the same direction.
CENTI
0.01
Unit
MILLI
0.001
Unit
.54 cm = _________ Dm
Starting Point
Ending Point
How many jumps does it take?
4. __. __. __. = .00054 Dm
3
2
1
Ladder Method
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How many hecta grams (Hg) are in 10 grams?
10.0 grams
.10 Hg
How many grams are in 28 milligrams (mg)?
28.0 mg
.0280 g
How many centimeters are in 9.23 meters
9.23 m
923.0 cm
1
1000.0
1600
14000
.109
.250
.56
7000.0
.00024
20000o
250000.0
16.0
.016
1000000.0
Turn and talk
 Why is it important for all scientists to use a standard
system of measures rather than the system that may
be most popular in their home country or region?
Conversions
 Part of science is converting numbers
from one set of units into another set of
units.
Conversions
Conversions Example #1
 Convert 7 gallons into quarts (1 gallon = 4 quarts)
 7 gallons x 4 quarts = 28 quarts
1 gallons
 Which is faster, 27 miles/hour or 13.2 meters/second? (40
inches = 1 meter and 5280 feet = 1 mile)
 27 miles X 5280 feet X 12 inches X 1 meter = 42,768 m/hour
hour
1 mile
1 foot
 42,768 meters X 1 hour
hour
60 minutes
40 inches
X 1 minute = 11.88 meters/sec
60 seconds
Conversions #2
 Convert 66 ft/sec into miles/hour (5280 feet = 1 mile)
 66ft/sec X 1 mile/5280 ft X 1 min/60 sec X 1 hour/60 min =
 .00000347 miles/hour
Conversions HW
 Directions: Complete the conversions worksheet. This
is homework and is due tomorrow in the basket.
 Noise: 1 (with partner)
 Time: Until 8:36/10:50
Exit Ticket #3 Conversions
 Name: _____________ Date: 1/20 Period: _____
 Answer the following questions. (worth 1 pt. each)
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1. What is the abbreviation for Kilogram: __________
2. 77 kg = __________g
3. 320 m = _________Hm
4. 88.7 cm = _______ mm