Name______________________________________________ Block______ Microscopes and SI Units of Measurement Fill in the part names. P. XXXVI and the Internet will help. In the space below, describe the steps necessary to focus a compound microscope on high power. Number these steps and be complete. Start with “place your slide on the stage” and take it from there. 1. Fill in the empty boxes Eyepiece X 10 5 10 5 20 Objective X Total Magnification X 20 25 200 100 20 15 1500 2. Arrange the following in the order in which light passes through a compound light microscope. SPECIMEN OCULAR LENS OBJECTIVE LENS BODY-TUBE LIGHT 3. What are the maximum magnifications of the following microscopes? LM TEM SEM 4. A group of scientists want to determine whether the bacteria they are studying have viruses inside them. Which type of microscope should they use? Explain your answer. 5. List the names and abbreviations for the SI base units for, p. 1114. Length Mass Time 6. Using the prefixes on page 1114, describe which units of measurement would be the best to use for: Distance across town: Height of a person: Weight of a person: Weight of an aspirin: 7. If SI measurement is no more accurate than the English system, why do scientists throughout the world use it?