Sci 8 - 2.1 Microscopes

3.1 Microscopes

Some text here about the topic of discussion

Typically, a compound microscope is used for viewing samples at high magnification (40 - 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens (in the eyepiece) and the objective lenses (close to the sample).

​Microscope Parts

• ​Ocular Lens

• ​Stage

• ​Objective Lenses

• ​Diaphragm

• ​Coarse Adjustment Knob

• ​Fine Adjustment Knob

• ​Light

Multiple Choice

Piece 7

• Ocular Lens

• Objective Lens

• Base

• Arm

Multiple Choice

Number 3

• Ocular Lens

• Objective Lens

• Diaphragm

• Base

Multiple Choice

Number 8

• Base

• Stage

• Tube

• Arm

Multiple Choice

Number 10

• Stage

• Stage Clips

• Diaphragm

• Base

Multiple Choice

Number 12

• Course Adjustment

• Fine Adjustment

• Small Adjuster

• Large Adjuster

Multiple Choice

Number 5

• Knob

• Ocular Lens

• Diaphragm

• Objective Lens

​How to Focus A Microscope

• Start with lowest power objective lens (eg. 4x)

• Look through the eyepiece and move the coarse adjustment knob until the image comes into focus.

• Move the microscope slide around until the sample is in the center of the field of view (what you see).

• Use the fine adjustment knob to focus with the clearest image

Multiple Choice

You must carry a microscope with...

• your nose in the air like you just don't care

• your hand and your chin

• two hands, one under the base and one on the top

Multiple Choice

To focus a specimen, it is best to start with which objective:

• high power

• low power

• scanning

• ocular

Multiple Choice

A microscope has a 4x ocular lens and a 10x objective, what is this microscope's total magnification?

• 4x

• 14x

• 40x

• 400x

Multiple Choice

When moving to the next higher power objective,

Focus using only the_________ adjustment knob; the object quickly comes into focus with very light adjustment

• coarse

• fishy

• fine

• crunchy

Multiple Choice

If you move the slide left while viewing, in which direction will it appear to move?

• right 

• left

• up 

• down

Multiple Choice

If you move the slide left while viewing, in which direction will it appear to move?

• right 

• left

• up 

• down