1. Data Collection and Analysis
Chapter 1
Data Collection and Analysis

2. The Metric System
The metric system (International System of Units) is used when describing experiments and data.
Based on multiples of 10.

3. Length
The basic unit of length is the meter (m)

4. Metric Units of Length 1 meter (m) = 10 decimeters (dm)
1 dm = 1x10-1 m (1/10)
1 m = 100 centimeters (cm)
1 cm = 1x10-2 m (1/100)
1 m = 1,000 millimeters (mm)
1 mm = 1x10-3 m (1/1000)
1 m = 1,000,000 micrometers (μm)
1 μm = 1x10-6 m (1/1,000,000)

5. Metric Units of Length 1 m = 1,000,000,000 nanometers (nm)
1 nm = 1x10-9 m (1/1,000,000,000)
10 m = 1 dekameter (dam)
100 m = 1 hectameter (hm)
1000 m = 1 kilometer (km)
1,000,000 m = 1 megameter (Mm)
1,000,000,000 m = 1 gigameter (Gm)

6. Volume Amount of space an object occupies.
Metric Units are the Liter (L) for liquids.
Metric Units are cubic centimeters (cc or cm3) for solids.

7. Mass The amount of matter in an object.
Metric measurement is the kilogram (kg).
Small objects are measured in grams (g).
1 kg = 1000 g
1g = 1000 mg

8. Temperature Metric system uses the Celsius scale
Water freezes at 0ºC and boils at 100ºC
Body temperature is 37 ºC

9. Time
Time is measured in seconds

10. Accuracy vs. Precision
Accuracy = How close a measured value is to the true value.
Precision = How close the measured values are to each other.
High accuracy, high precision
High accuracy, low precision
Low accuracy, high precision

11. Clicker Question
Which unit is used in order to measure the mass of an object?
Liter
meter
gram
second 

12. Clicker Question
You would like to measure the volume of a spoon full of water. The best metric units to use are mL L kL 

13. Clicker Question
How many cm?
18.2
18.25
19.7
19.75 

14. Clicker Question
How many mm?
18.2
18.25
182.5
1825 

15. Clicker Question
How many m?
18.2
18.25
1.825
.1825 

16. Clicker Question
How many km?
22.55
.2255 

17. Clicker Question
What is the mass?
.2246g
2246g
22.46g
224.6g 

18. Clicker Question
What is the mass?
.2166g
21.66g
216.6g
2.166g 

19. Clicker Question
What is the mass?
44.6g
.446g
4.46g
446g 

20. Clicker Question
What is the mass?
13.3g
1.33g
.133g
133g 

21. Clicker Question
What is the volume?
25.2mL
2.52mL
252mL
.252mL 

22. Clicker Question
What is the volume?
3.68mL
.368mL
36.8mL
368mL 

23. Clicker Question
What is the volume?
54.8mL
.548mL
5.48mL
548mL 

24. Clicker Question
What is the volume?
14.9mL
149mL
1.49mL
.149mL