1. THE METRIC SYSTEM A Global System of Measurement

3. Introduction Definition- A system of measurement units used all over the world. Definition- A system of measurement units used all over the world. Same “Language” Same “Language” Measure anything Measure anything Base 10 system Base 10 system Base units Base units prefixes prefixes

4. Metric Prefixes PrefixAbbreviationDecimal Moves Definition of Prefix terat12 places to the RIGHT 1 000 000 000 000 gigaG9 places to the RIGHT 1 000 000 000 megaM6 places to the RIGHT 1 000 000 kilok3 places to the RIGHT 1 000 hectoh2 places to the RIGHT 1 00 decaD1 place to the RIGHT 10 BASE-- decid1 place to the LEFT 0.1 centic2 places to the LEFT 0.01 millim3 places to the LEFT 0.001 micro μ 6 places to the LEFT 0.000001 nanon9 places to the LEFT 0.000000001 picop12 places to the LEFT 0.000000000001

5. Length DEFINITION: measurement of distance from one point to another DEFINITION: measurement of distance from one point to another Unit- Meter (m) Unit- Meter (m) Equipment- meter stick, metric ruler, “click wheels” Equipment- meter stick, metric ruler, “click wheels”

6. Length Equivalents

7. Length Estimates

8. Mass/Weight DEFINITION: DEFINITION: Mass- a measurement of the amount of matter that makes up and object Mass- a measurement of the amount of matter that makes up and object Weight- a measurement of the effect of gravity on an object Weight- a measurement of the effect of gravity on an object Unit- gram (g) Unit- gram (g) Equipment- triple beam balance, spring scale Equipment- triple beam balance, spring scale

9. Mass/Weight Measurements

10. Direct measurement- for solid objects: Direct measurement- for solid objects: Indirect Measurement- for liquid objects: Indirect Measurement- for liquid objects: Tips- Tips- Make sure your balance is zeroed out before beginning to measure by turning the knob. Make sure your balance is zeroed out before beginning to measure by turning the knob. Get down at eye level to read the balance. Get down at eye level to read the balance.

11. Mass/Weight Equivalents

12. Mass/Weight Estimates

13. Volume DEFINITION: the amount of space an object takes up DEFINITION: the amount of space an object takes up Unit- liter (L), cubic centimeter (***1 mL = 1 cm 3 ***) Unit- liter (L), cubic centimeter (***1 mL = 1 cm 3 ***) Equipment- graduated cylinder, beaker, micropipettes Equipment- graduated cylinder, beaker, micropipettes Measurements Measurements Direct Direct Water Displacement Water Displacement Tips: Tips: Get down at eye level to read the graduated cylinder Get down at eye level to read the graduated cylinder Read the cylinder at the bottom of the meniscus. Read the cylinder at the bottom of the meniscus.

14. Volume Measurements

15. Volume Equivalents

16. Volume Estimates

17. Time DEFINITION: a measure of change DEFINITION: a measure of change Unit: second (s) Unit: second (s) Equipment: stopwatch, clock Equipment: stopwatch, clock Equivalents: Equivalents:

18. Temperature DEFINITION: A measure of the average amount of heat contained in an object DEFINITION: A measure of the average amount of heat contained in an object Unit: Celsius (C) Unit: Celsius (C) Equipment: thermometer Equipment: thermometer Standard Equivalents: Standard Equivalents:

19. Temperature Estimates Room Temperature= 68  F = 20  C Room Temperature= 68  F = 20  C Water Freezes At: 32  F = 0  C Water Freezes At: 32  F = 0  C Water Boils At: 212  F = 100  C Water Boils At: 212  F = 100  C

20. Density DEFINITION: the amount of matter in a given amount of space. DEFINITION: the amount of matter in a given amount of space. Unit: Grams per milliliter (g/mL) Unit: Grams per milliliter (g/mL) Equipment: No direct measurement can be measured, must be calculated. Equipment: No direct measurement can be measured, must be calculated.

21. Density Estimates

22. Speed DEFINITION: the change in position over time. DEFINITION: the change in position over time. Unit: meters per second (m/s), kilometers per hour (km/hr) Unit: meters per second (m/s), kilometers per hour (km/hr) Equipment: No direct measurement can be measured, must be calculated. Equipment: No direct measurement can be measured, must be calculated. Equivalents Equivalents