1. Converting Units Step 1: Identify Units to Convert
Kilo
1000 units
Hecto
100 units
Deka
10 units
Meter
Liter
Gram
1 unit
Deci
0.1 units
Centi
0.01 units
Milli
.001 units
Step 1: Identify Units to Convert
(Are you going from bigger → smaller or smaller → bigger)
Step 2: Count the hops from the decimal

2. Converting Units Cont’d
175 cm → Convert to km
Bigger → Smaller
Smaller → Bigger
Kilo-Hecto-Deka-“Basic”-Deci-Centi-Milli
King Henry Died By Drinking Choco. Milk
5 Hops!
0.00
175. km

3. Converting Units Cont’d
232 hL → Convert to cL
Bigger → Smaller
Smaller → Bigger
Kilo-Hecto-Deka-“Basic”-Deci-Centi-Milli
4 Hops!
232.
0000. cL

4. Measurements Graduated Cylinder Used to Measure “Volume” Basic Unit: Liters
Measure at Lowest Point
of Meniscus
Beakers are Not used
to Measure Volume

5. Measurements Balance Used to Measure “Mass” Basic Unit: grams
We measure Mass not Weight
Mass is a measure of the amount of material (matter)
Weight depends on gravity
Changes for: Earth
Moon
Venus

6. Measurements Ruler Used to Measure “Length” Basic Unit: meters
65 mm
6.5 cm
3 mm
.3 cm
#’s represent centimeters
There are 10 mm in 1 cm

7. Scientific Method Quantitative Observation Qualitative Observation
Think #’s, made with instruments: ruler, scale, graduated cylinder, thermostat, *measureable
Qualitative Observation
Think qualities of something, use your senses: sight, smell, taste, touch, hear
Independent Variable
What we manipulate or change in an experiment
Dependent Variable
What we measure, the affect of the ↑independent variable
Control Variable
Variables we controlled between experiments/trials
We need something to compare our results to

8. Plants + Fertilizer
We have 12 daisies in 6” pots. We want to see if fertilizer affects the growth of the daisies. We place all 12 daisies on the window sill and give them 100 mL of water at 12:00 pm each day. We divide the daisies by placing 6 into Group A and 6 into Group B. We add 2 ounces of fertilizer to the 100 mL of water Group B gets. The growth of each daisy is measured every Friday at 2:00 pm.
Independent Variable
Dependent Variable
Control Variables
Fertilizer added to
Group B
100 mL Water
Amount of Sunlight
Time of Watering
Time of Measurement
6” pots
Growth of each
daisy
Experimental Group
Control Group
Group B
Has independent variable applied
Group A
Standard for comparison

9. Different Color Lights + Moths
We have 4 lights: Green, Blue, Pink, Red. We want to see if light color affects the number of moths attracted. We place each light in the corner of its own 10’x10’ room with 50 moths present, one room has a standard yellow light present. We turn the lights on for 15 minutes every 12 hours and measure the number of moths within 1’ of the light after the 15 minutes is up.
Independent Variable
Dependent Variable
Control Variable
Color of Light
Number of moths
within 1’ of light
Size of Room
# of Moths
How long Light is on
How often Light is on
Light Placement
Experimental Group
Control Group
Rooms with: Green, Blue,
Pink, and Red color lights
Room with standard
Yellow light