1. Energizer Flower Power
SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a special Flower Power fertilizer to see if it will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. He places one plant in a sunny window and waters it every day with fertilized water. He places the other plant on a shelf in a closet and waters it with plain water every other day.
What did SpongeBob do wrong in this experiment? Explain.
What should SpongeBob do to test the effectiveness of Flower Power fertilizer?

2. Energizer What is the difference between a theory and a law? Theory
An explanation for many hypothesis and observations
Explains an observation and helps predict what may happen in the future
May change as new observations arise
Law
A summary of many experimental results
Tells you how things work
Tells you what will happen

3. Energizer
Stacy decided to do an experiment to test which brand of artificial sugar tasted the most like real sugar. In the experiment she tested three different brands Splenda, Equal and Stevia. She placed 5mL of each sweetener in 100 mL of plain water and had 20 people taste all 3. The taste testers had a sip of plain water in between each to cleanse their palate. As they tested each sample they rated the water from 1-5 (1 being most like sugar, 5 being least).
Name the independent variable, dependent variable and at least 3 controls in Stacy’s experiment.

4. Energizer – 8/19/13
Please pick up all 7 sheets and a glue stick from the far counter. Try to keep them in order from left to right!
Don’t begin gluing anything until we start class!

5. Is It Matter? Circle the items that you believe are matter:
Table
Air
Glass
Sound
Light
Sand
Write your own definition of what matter is.

6. What is your definition??

7. Is It Matter? Circle the items that you believe are matter:
Table
Air
Glass
Sound
Light
Sand
Now lets fix that definition…

8. Matter:
Anything that has mass and take up space!

9. Inertia An objects resistance to change in motion
A change in motion could be moving something or slowing something down
Inertia is directly related to mass…the more massive something is the harder it will be to change its motion.

10. Would it be easier to…
Stop a football player or toddler running down the field
Move a cargo ship or a sailboat
Lift a full dresser or empty it out and then lift it
Slow down a single engine plane or a commercial airliner
It is harder to stop or move things that have greater mass or more inertia!

11. Density
A box has a volume of 300 cm3 and a mass of 800 grams. What is the density of the box?

12. The Metric System…
Class Notes

13. The Metric System Is
The standard system used around the world by scientists.
We refer to it as the International System of Units or SI.
It is based on a system of decimals.
It is used to measure length, mass, volume, density and temperature.

14. Common Metric Units Kilo = 1000 Super Sized Hecta = 100 Bigger
Deka = 10 Big
Base Unit – Meter – Liter – Gram
Deci = 0.1 Small
Centi = Smaller
Milli = Smallest
Remember: King Henry Died By Drinking Chocolate Milk

15. Mass
Measured in grams
Mass measures the amount of matter in an object (BUT NOT THE WEIGHT!)
Measured using a triple beam balance

16. Weight The measure of gravitational pull on an object.
Measured in newton's using a spring scale.

17. Mass vs. Weight Mass The amount of matter in an object
Tool: triple beam balance
Unit: gram
Constant no matter where the object is located
Weight
The amount of gravitational pull on an object
Tool: spring scale
Unit: newton
Varies depending on location

18. Mass and Weight: Similarities
As the mass rises so does weight
We use both to describe the heaviness of an object
On earth these go up and down together

19. Volume Measured in Liters
Volume is the amount of space an object takes up
1 mL = 1cm3

20. Density The amount of mass in a given volume. Density = mass/volume
g/mL
Which is more dense?

21. Length The distance from one point on an object to another
Measured in Meters
The smallest unit of length is the millimeter (mm). When would you use millimeters to measure length?
125 mm = ___ cm
Largest unit of length is Kilometer, what would you measure using the km?

22. Temperature Measured in Celsius
Water freezes at 0˚C and boils at 100˚C

23. Warm Up – 9/9
Which SI unit would you probably use to express the height of your desk?
What would be the appropriate tool to use when measuring the mass of a spoon?
Ms. Gould is measuring small amounts of liquid chemicals out to be used in an experiment. Name the tool and SI unit that she is most likely using.

24. Metric Conversions
Since the metric system is a decimal system, it is easy to convert between units.
There are several methods to use:
The stair step method
Decimal Hopping
Factor Label Method

25. The Stair Step Method Kilo - k 1000 units
To convert to a smaller unit, move decimal point to the right or multiply.
Hecto - h
100
units
Deka - da 10
units
Basic Unit
(g, m, L)
Deci - d
0.1
units
To convert to a larger unit, move decimal point to the left or divide.
Centi - c
0.01
units
Milli - m
0.001
units
1.) 1000 mg = 1 g 3.) 109 g = ____ kg
2.) 160 cm = 1600 mm 4.)14 km = ____ m

26. Decimal Hopping
Once you master the stairs, decimal hopping should become easier. Since the metric system is set up by powers of ten all we have to do is move the decimal point to change units.
If you are moving to a LARGER unit move the decimal to the LEFT.
If you are moving to a SMALLER unit move the decimal to the RIGHT.

27. Example: smaller to larger
Moving to a larger unit…
33 m = ____ km 1st place your decimal point
33. m = ____ km 2nd, how many places away is km from m? Larger moves LEFT.
33. m = ____ km
33. m = .033 km

28. Example: larger to smaller
Moving to a smaller unit…
67.2 dm = ____ mm 1st the decimal is placed, we will start hopping from that point
67.2 dm = ____ mm 2nd , how many places is dm from mm?
67.2 dm = ____ mm
67.2 dm = 6720 mm

29. Try Some… 460 L = ____ mL 90 cg = ____ kg 23.56 km = ____ hm

30. Another Method for Conversion…Factor Label
Sometimes it is not as easy as moving the decimal.
For instance when converting from pounds to kilograms we cannot just move the decimal
for these conversion we use the factor label method.

31. Step 1:
Example: how many seconds are in 50 hours? Put the known quantity in the upper-left space: 50 hr

32. Step 2:
Put the conversion factor in the next set of boxes to the right. Make sure that units match diagonally:
50 hr 60 min
____ 1 hr

33. Step 3:
Cross out, or cancel, the units that appear the same on both top and bottom:
50 hr 60 min
____ 1 hr

34. Step 4:
Now ask, “is the unit that’s not crossed out the one that I want?”
If the answer is “yes,” then continue to step 5
If the answer is “no;” return to step 2
50 hr 60 min 60 sec
____ 1 hr min

35. Step 5: To solve the problem, multiply the numbers on the top row.
50 x 60 x 60 = 180,000
Then multiply the numbers on the bottom row
1 x 1 x 1
50 hr 60 min 60 sec
____ 1 hr min

36. Step 5 (cont.):
Now, divide the top row’s product by the bottom row’s product
180,000 / 1 = 180,000 seconds

37. Ticket Out the Door
Use the factor label method to determine how many inches are in 20 miles.
12 in = 1 foot
3 feet = 1 yard
5, 280 feet = 1 mile