Name: ________________________________
Microscope Functions
1. What two parts do you use to focus the microscope? (circle two)
a. Nosepiece
b. Coarse adjustment knob
c. Fine adjustment knob
d. Eyepiece
e. Stage
2. Why should you never use the coarse adjustment knob on high power?
a. It gets too close to the part you are trying to see.
b. It makes small moves allowing you to focus on what you see.
c. It makes large moves that could break a glass slide.
d. It has too much magnification on high power.
3. Our microscopes have three objectives lenses. What are their powers?
a. High power lens = _____________
b. Medium power lens = _____________
c. Low power lens = _____________
4. What is the magnification of the eyepiece lens?
a. 4x
b. 10x
c. 40x
d. 100x
e. 400x
5. How do you switch objectives lenses?
a. You turn the head.
b. You rotate the diaphragm.
c. You rotate the nosepiece.
d. You lower stage.
6. Which structure controls how much light passes through the microscope?
a. The stage
b. The diaphragm
c. The eyepiece
d. The fine adjustment knob
7. You should carry the microscope by placing your palm on the __________________ and gripping the
___________________ with your other hand.
8. How can you prevent your slide from slipping on the stage?
a. Place the slide under the stage clips.
b. Lower the stage with the coarse adjustment knob.
c. Start over at low power.
d. Turn the head to the back of the microscope.