1. August 29, 2015 Lopez Panthers Components of an Investigation
Measurements
Homework: None

2. Table of Contents Page Safety Map 1 SpongeBob Safety 2
Table of Contents
Page
Safety Map 1
SpongeBob Safety 2
Scientific Method 3
Components of an Investigation 4
Assessment Page

3. 4 Independent Variable (If..) Constants (same)4
Components of an Investigation
Independent Variable (If..)
Constants (same)
Dependent Variable (then..)
Hypothesis:
Results:
Independent variable: The variable that is changed on purpose. "If' of the hypothesis.
Dependent variable: The responding variable, results. "then' of the hypothesis.
Constants - factors not allowed to change, stay the same.

4. 4 Independent Variable (If..) Constants (same)4
Components of an Investigation
Independent Variable (If..)
Constants (same)
Dependent Variable (then..)
 genre of music
-skill level 
# of accidents 
 - heavy metal
 - 3 minutes
  - sad country
 - driving course
  - no music
 - songs per genre
Hypothesis:
  If a driver listens to heavy metal music then he will
have more accidents
Results:
Heavy Metal - 8 
Sad Country – 3
 No music - 6
Independent variable: The variable that is changed on purpose. "If' of the hypothesis.
Dependent variable: The responding variable, results. "then' of the hypothesis.
Constants - factors not allowed to change, stay the same.

5. Measurement The Act of Measuring & The Metric System
Dimensions, quantity, or capacity as ascertained by comparison with a standard

6. What can we Measure? Time Length Mass Temperature Force Volume Seconds
Meter
Mass
Gram
What can we Measure?
Temperature
ºC (Celsius)
Force
Volume
Newton
Liter

7. The Metric System Based on multiples of 10! Prefixes Suffixes
___meter (length)
___liter (volume)
___gram (mass)
Prefixes
Kilo____ = 1000 times
Centi___ = 1/100
Mili____ = 1/1000
Based on multiples of 10!

8. Scale:
system of ordered marks at fixed intervals used as a reference standard in measurement 10
Intervals of 1

9. What is the interval of this scale?
Interval is….. 2
units 30 20

10. And on this scale?
Interval is….. 5
units 90 80 70 60

11. MASS (g) How much matter does it contain?
Measured with a Triple Beam Balance
Milligrams, Grams, & Kilograms

12. Tips on using the Triple Beam Balance
Move the 100s first, then 10s, then 1s.
Make sure the 100s and 10s slider is in a grove.
Use the tip of a pen or pencil to move the small 1s slider.
Last make sure the lines are even!

13. A balance is ready to use when it is zeroed out!

14. ???.?
What’s the Mass?
Final Answer: 333.4g

15. ???.?
What’s the Mass?
Final Answer: 457.6g

16. 203.6 g

17. 65.0 g

18. Force (N) How much effort does it take?
Measured with a spring scale
Measured in Newton's

19. Too High!!!
JUST RIGHT!!
Too Low!!!
Like the Triple beam balance, make sure the spring scale reads zero before you use it!!

20. 3.4 N (What is the scale?)

21. 1.3 N (careful with the scale)

22. 14.4 N Scale is 0.4!!! 2.0 divided by 5 units = 0.4

23. 5.8 N

24. How much force is required to pull the stool?
12.8 Newtons

25. Length & Distance (m) How long is it? How far is it?
Measured with a ruler or meter stick.
Millimeter Centimeter, & Kilometer

26. When measuring Length Remember to:
Make sure you know the units of your ruler or measuring instrument.
Identify the scale
Line up the object up at the zero mark

27. 5 cm
How long is the side?

28. 4.2 cm or 42mm

29. 1.2 cm or 12 mm

30. 1.3 cm
13mm
How many millimeters?…

31. 7 cm

32. 13.8cm or 138mm

33. How wide is a CD?
52 mm or 5.2 cm

34. Temperature (ºC) How Hot or Cold is Something?
Measured with a thermometer
Water freezes at 0º C & boils at 100º C

35. 42.2 ºC

36. 23.5 ºC

37. 22.3 ºC

38. 2.9 ºC

39. -0.5 ºC

40. Volume (L) How much space does it take up?
Liquids measured with a Graduated Cylinder
Milliliters & Liters

41. When we measure volume we read the bottom of the meniscus!
Not Here
Here, at the bottom of
the meniscus!
33 mL. Not 34!

42. 88 mL (Scale is 2)

43. 36 mL

44. 25 mL

45. 54.5 mL

46. Time (s) How long does it take?
Measured with a stopwatch, clock, or calendar
Time is universal; hours, minutes, & seconds

47. The Metric System Based on multiples of 10! Prefixes Suffixes
___meter (length)
___liter (volume)
___gram (mass)
Prefixes
Kilo____ = 1000 times
Centi___ = 1/100
Mili____ = 1/1000
Based on multiples of 10!

48. Let’s practice some measurement!