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:

Make-up’s today at lunch

1/20 Daily Catalyst Pg. 6 Conversions

Average Top Scorers:1st Period 1.93 Tashtoni, Rilda,

Odalys, Christian

2nd Period 2.11 Brian, Eva, Amani, Wyatt, Chase, Kayla, Daniel V.

Daily Catalyst Class Business Conversion notes Conversion practice Exit Ticket #3

1/20 Daily Catalyst Pg. 6 Conversions

Today, we will be able to utilize mathematics, organizational tools, and graphing skills to solve problems and

interpret data.

1/20 Daily Objective

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?

Conversions in Biology

Metric units commonly used in biology include:

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?

Metric System

We convert between units depending on what we are measuring.

Conversions

Key Point #2: Decimal Placement

Decimal Placement

Decimal Placement

Metric Conversions Ladder Method

KILO1000Units

HECTO100

UnitsDEKA

10Units

DECI0.1

UnitCENTI

0.01Unit

MILLI0.001Unit

MetersLitersGrams

Ladder Method

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.

4 km = _________ m

12

3

How many jumps does it take?

Starting Point Ending Point

4.1

__.2

__.3

__. = 4000 m

KILO1000Units

HECTO100

UnitsDEKA

10Units

DECI0.1

UnitCENTI

0.01Unit

MILLI0.001Unit

MetersLitersGrams

Ladder Method

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.

.54 cm = _________ Dm

12

3

How many jumps does it take?

Starting Point Ending Point

4.3

__.2

__.1

__. = .00054 Dm

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

Ladder Method

1

1000.0

160014000.109.250

.567000.0

.00024

20000o

250000.016.0.016

1000000.0

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?

Turn and talk

Part of science is converting numbers from one set of units

into another set of units.

Conversions

Conversions

Convert 7 gallons into quarts (1 gallon = 4 quarts) 7 gallons x 4 quarts =

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

42,768 meters X 1 hour X 1 minute = 11.88 meters/sec

Conversions Example #1

1 gallons

28 quarts

hour 1 mile 1 foot 40 inches

hour 60 minutes

60 seconds

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 #2

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

Conversions HW

Name: _____________ Date: 1/20 Period: _____ Answer the following questions. (worth 1 pt.

each)

1. What is the abbreviation for Kilogram: __________

2. 77 kg = __________g 3. 320 m = _________Hm 4. 88.7 cm = _______ mm

Exit Ticket #3 Conversions