Microscopy: Parts & Observations 2009
Name: _TEACHER'S NOTES_ Period: ____
1. What are the parts? Label the parts of a microscope on the diagram below.
Eyepiece
Body tube
Nosepiece
Arm
Low power
Med. Power
High power
Stage
Stage clips
Coarse Adj.
Diaphragm
Fine Adj.
Light source
Base
WORD BANK
Arm
Eyepiece
Nosepiece
Base
Fine adjustment
Stage
Body tube
High power objective
Stage clips
Coarse adjustment
Light source
Med. Power objective
Diaphragm
Low power objective
2. What do the parts do? Match the part of the microscope with its function.
1
Minority Science Programs – School of Biological Sciences – University of California,
Irvine
Microscopy: Parts & Observations 2009
_5_ Where the slide is placed
1. Objectives
_4_ Used to focus when using the low power objective
2. Base
_1_ Magnifies the specimen
3. Arm
_3_ Used to carry microscope
4. Course adjustment
_7_ Used to focus when using the high power objective
5. Stage
_6_ The lens you look through, magnifies the specimen
6. Eyepiece
_2_ Supports the microscope
7. Fine adjustment
3. Magnification Calculate the total magnification for each objective.
Eyepiece: 10X
Objectives: 4X, 10X, or 40X
4X objective: __10__ x __4__ = __40X__
10X objective: __10__ x __10__ = __100X__
40X objective: __10__ x __40__ = __400X__
4. Letter “e” Observe the letter “e” with your naked eye and the microscope. Draw
only what you see through the eyepiece. Include the correct magnification.
Naked eye
_______ X
What do you observe about the orientation and direction of the image?
___In the eyepiece, the “e” appears to be upside-down and backwards.__
2
Minority Science Programs – School of Biological Sciences – University of California,
Irvine
Microscopy: Parts & Observations 2009
5. Comic strip Observe the colored comic strip with your naked eye and the
microscope. Draw only what you see through the eyepiece. Include the correct
magnification.
Naked eye
_______ X
6. Prepared Slides Observe a prepared slide at different magnifications. Record the
title of the slide. Draw only what you see through the eyepiece. Include the correct
magnification.
Slide title: __________________________
_______ X
_______ X
Slide Preparations:
3
Minority Science Programs – School of Biological Sciences – University of California,
Irvine
Microscopy: Parts & Observations 2009
Letter “e”: Make a class set of letter “e” slides by printing out a page of tab-delimited e’s. Cut
out each letter and secure them to slides using clear nail polish and a cover slip. Let
dry overnight before using.
Comic strip: Cut out small pieces of colored newspaper comic strips. Have students place
them on a slide with a cover slip when viewing under the microscope.
Prepared slides: Use a commercially available set of assorted prepared slides.
Cheek cells: Have each student scrape the inside of their cheek using a cotton swab. Smear
the swab on a clean slide to dislodge the cells. Add a drop of bromothymol blue stain
and cover with a cover slip. Disinfect used slides with bleach. Only allow students to
handle their own cheek cell slides.
4
Minority Science Programs – School of Biological Sciences – University of California,
Irvine