LAB #10 – Using a Microscope
A microscope is an instrument used to see objects too small
for the naked eye. The science of investigating small objects using such an
instrument is called microscopy. Microscopic means invisible to the eye
unless aided by a microscope. There are many types of
microscopes, the most common and first to be invented is the optical microscope which uses light to image the sample.
Problem
How can we tell the difference between salt and sugar?
Hypothesis
Materials
Microscope
Salt
Sugar
Celery leaves
Various slides
Procedure
1.
Make observations of salt and sugar
at different degrees of magnification.
2.
Make observations of celery leaves
at different degrees of magnification.
3.
Make observations of various slides at
different degrees of magnification.
Results
Observations with no magnification
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Salt
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Compare/contrast
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Sugar
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Observations at 40X magnification
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Salt
|
Sugar
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Observations at 100X magnification
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Salt
|
Sugar
|
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Observations with no magnification
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Celery leaves
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Human hair
|
fingernail
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Observations of various objects
with 40X magnification
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Celery leaves
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Human hair
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fingernail
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Observations of various objects with 100X magnification
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Celery leaves
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Human hair
|
fingernail
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Observations of various objects at
40 X magnification
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Various slides
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Various slides
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Various slides
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Observations of various objects at
100X magnification
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Various slides
|
Various slides
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Various slides
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Observations of various objects at
100X magnification
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Various slides
|
Various slides
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Various slides
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Analysis
1.
How did the microscope assist you in
visualizing the various objects?
2.
Why does the microscope stage have a
hole in it?
3.
Which parts of the microscope
enlarge the image of the specimen?
4.
If the specimen appears blurry, what
should you do first?
5.
Describe the correct way to carry a
microscope.
6.
If you are looking at a slide with
the objective lens on the 10X, what is the total magnification of the specimen?
Conclusion
1. Label the following parts of the
microscope:
1.
Eyepiece lens
2.
Coarse Focus
3.
Fine Focus
4.
Objective lens
5.
Arm
6.
Stage
7.
Base
