1.3 Microscopes

1.3 Microscopes

by Brooke Manley

​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

A microscope is an instrument that.

• makes faraway objects look closer.
• makes small objects appear larger.
• decreases the size of small objects.
• increases the size of small objects.

Multiple Choice

The greater the ___________________, the smaller the field you are actually viewing.

• detail

• objective

• magnification

• body

Multiple Choice

Electron microscopes use a beam of _________________ to produce an image magnified up to 100,000 or more

• Sunlight
• Lasers
• Electrons