1. Warm Up 63 cm 6 m 5 g 508 mg 1,500mL 1.5 L 536 cm 53.6 dm 43 mg 5 g
Greater than, Less than or equal (<, >, or =)
63 cm m
5 g mg
1,500mL L
536 cm dm
43 mg g
3.6 m cm

2. Warm Up

3. The Metric System

4. The Metric System and SI Units
Scientists use International System (SI) units for measurements of
-distance
-volume
-mass
-temperature
The International System is based on multiples of ten and the metric system of measurement.

5. The Metric System and SI Units

6. The Metric System and SI Units

7. Symbols in Metrics
Distance:
-km, hm, dam, m, dm, cm, mm, μm
Volume:
-kL, hL, daL, l, dL, cL, mL, μL
Mass:
-kg, hg, dag, g, dg, cg, mg, μg

8. Let’s Practice Using SI Units
Width of a door frame-
Length of GA 400-
A large paperclip-
Life Science Text Book-
Half a bottle of Coke-
The amount of shampoo in a bottle-

9. A Special Situation
Volume can be measured with each of the following units:
1ml = cm3 = cc

10. Temperature 30° is hot. 20° is nice. 10° is chilly. 0° is ice.
Temperature is measured in Celsius (C°).
30° is hot.
20° is nice.
10° is chilly.
0° is ice.

11. Let’s Review Metric Conversions

12. Changing Metric Units

13. k h da d c m

14. k h da d c m
8m = _____cm

15. k h da m d c
8m = _____cm

16. km h da m d c
8m = _____cm

17. km hm da m d c
8m = _____cm

18. km hm
dam m d c
8m = _____cm

19. km hm
dam m dm c
8m = _____cm

20. km hm
dam m dm cm
8m = _____cm

21. km hm
dam m dm cm mm
8m = _____cm

22. km hm
dam m dm cm mm 8
8m = _____cm

23. km hm
dam m dm cm mm 8
8m = _____cm

24. km hm
dam m dm cm mm 8.
8m = _____cm

25. km hm
dam m dm cm mm 8.
80.
8m = _____cm

26. km hm
dam m dm cm mm 8 80
800.
8m = _____cm

27. km hm
dam m dm cm mm 8 80
800.
8m = _____cm

28. km hm
dam m dm cm mm 8 80
800.
8m = 800 cm

29. Your Turn

30. The Microscope

31. Compound Light Microscope
Magnifies objects too small to see easily with the naked eye.
Main Parts
Tube w/ lenses
Stage
Light source

32. Total Magnification Power
Multiply the magnification of the eye-piece by the highest objective lens (Eye Piece X Objective Lens).
Ex: If the eye piece on a microscope says “5x” and the high power objective lens says “50”, what is the total magnifying power of the microscope? 250x

33. Field of View
Field of view is created as light is focused up on the stage from the light source.
Adjust by turning the diaphragm to allow light through to the stage.
Images appear blurred when the resolving power of the lens is not good.