1. What two structures on the microscope will you use to focus on your specimen? 2. Why should you never use the coarse adjustment knob on high power?

3. When do you use the fine adjustment knob?

4. Our microscopes have three objectives. What are their powers?

5. What is the magnification of the ocular lens?

6. What is the shortest objective called?

7. How do you switch objectives?

8. Which structure controls how much light passes through the specimen?

9.How should you carry the microscope?

10. How can you prevent your slide from slipping on the stage?