1. Complete the following metric to metric conversions.
          a) 182 milligrams = _____ grams                b) .07 hectoliters = _____ deciliters
          c) 1.74 centimeters = _____ meters           d) 75.3 liters = _____ milliliters

2. Complete the following metric to english conversions.
         a) 12 pounds = _____ grams                        b) 41 Fo = _____ Co

3. Answer the following questions concerning accurate use of equipment.
         a) At what angle should you read scales on equipment?
         b) What does it mean to "zero" a piece of equipment?
         c) What is the accuracy of the pan balances you use in this lab?
         d) Should you read the top, bottom, or middle of the meniscus produced when
                 a liquid is placed in a graduated cylinder?

4. Which base units (metric) would be used to measure each of the following items?
         a) a can of peanuts      b) a tank of gasoline      c) cloth      d) a person's weight

5. When a human is sent into space on a rocket he/she loses weight, but not                  mass.  When that person goes on a two week diet on earth they may lose
          both weight and mass. Explain the difference.

6. Complete the following statements.
         a) a meter is a measure of a part of ..........
         b) a liter is a measure of an amount of ..........
         c) a gram is a measure of an amount of ..........

7. Would you consider it a strength or weakness that the scientists who created
          the metric system used parts of the earth (distance between equator and
          pole for the meter, and amounts of water for mass) to base their units upon?
         Explain your answer.

8. Which measurement unit is being described in each of the descriptions below?
         a) English unit of mass                           b) small metric unit of force
         c) large metric unit of time                      d) small metric unit of volume

9. If I use water displacement to determine the volume of a block of metal in
          liters, then to be consistent I should use what unit to measure its:
         a) mass - ..........                                        b) force - ..........

10. Math reasoning for conversion factors:
         a) If there are approximately 4 liters per gallon, then 1 kiloliter = ........... gallons?
         b) 5 meters + 132 centimeters + 56 milliliters = .......... meters?
         c) Which is a higher temperature: 25o C, or 53o F?..........
11. Which metric unit of length is most appropriate for measuring:
         a) the height of a house?...........            b) the length of a human finger?..........
         c) the distance to Chicago?..........         d) the width of a pencil?..........

12. Which one of the following pieces of equipment is often used with microscopes?
              Explain your answer.
          (bunsen burners / pH meter / microtome / centrifuge / spectrophotometer)

13. Match the following pieces of equipment with the lab procedures they perform.
          A) incubator                   w) collecting
          B) autoclave                   x) sterilizing
          C) nets                            y) culturing
          D) microtome                 z) sectioning

14. Complete the following sentences concerning the parts and use of a microscope.
          a) the eyepiece lens sits in the ...................... of the microscope
          b) both objectives lenses sit on the ........................
          c) the .............................. controls the amount of light passing through the slide,                     and sits beneath the ............................
          d) a slide is held in place and moved by the ..........................
          e) when viewing a slide for the first time it is correct procedure to locate objects                     first using the ............... objective lens. While using this lens it is best to                     focus using the ..................... adjustment knob.

15. List at least 4 parts of the microscope that light must pass through to travel from                     the light source to your eyes.

FROM LABS:
16. List 2 methods by which I could find the volume of a small square block of metal?

17. What instrument would you use to measure the:
         a) diameter of a tennis ball?                                 b) volume of a rock?

18. What is the total magnification of a microscope with a eyepiece lens of 10X
          and a high power lens of 65X?

19. List three adjustments you can make to a microscope to better view a tiny
          object on a wet mount.

20. What is a micron? Why do biologists often use this measurement to describe
          the size of microorganisms?

Summary:
21. Imagine you are in charge of a government committee who's goal it is to                          encourage Americans to switch to the Metric system. List 3 reasons
           why American citizens should switch to Metric units.