microscopes and scientific method Flashcards
what microscope uses reflected light?
ex. magnifying glass.
simple microscope.
what microscope uses transmitted light
compound microscope.
differ simple and compound microscopes
A single lens is used in a simple. Whereas two are used in compound. Simple used reflected light ands compounds use transmitted. Compound have much higher magnification.
Define magnification, and what is the magnification on the average microscope.
how many times the specimen was enlarged.
10xobjective
LP: 40X
MP: 100X
HP: 400X
What is resolution and how does the it change/work?
how clear the image is.
has magnification increases, clarity decreases
stains and light reduction increases visibility of structures.
what is field of view, how is it calculated and how to you find the size of a specimen.
the diameter of the circle of light and it varies depending on magnification.
too calculate divide the MAG on LP by the Mag on viewing power then multiply by diameter of LP F.O.V
To find the size of specimen divide diameter of FOV by number of times specimen fits across
define the following
A. INDEPENDENT VARIABLE
B. DEPENDENT VARIABLE
C. CONSTANT
D. CONTROL
A. variable you change on purpose
B. variable that responds to to a change from ind. var. ( what you test for)
C. variable kept the same in the trial
D. the standard for comparison
differ between quantitive and qualitive
quantitive is measured numerically and qualitive is changes in characteristics. both used for observations in testing.
why use scientific method
to test a hypothesis and distinguish between two or more things. to be able to find out what is the best or worst outcomes.
steps of scientific method.
1.Question
2. Research
3. Hypothesis
4. Experiment
5. Data analysis
6. Conclusion
7. Communicate
