Microscopes

The Study of Cells Using the Microscope

Every microscope is a little different but we need to learn how to use the basic parts.

The Study of Cells Using the Microscope

Eyepiece

Arm

Objective lens

Course Adjustment Knob

Fine Adjustment Knob

Stage

Important Microscope Rules

Eyepiece

Arm

Objective lens

Course Adjustment Knob

Fine Adjustment Knob

Stage

1. Always carry the microscope with TWO HANDS. One hand holding the arm, and the other holding the base.

2. Always start with the LOWEST POWER OBJECTIVE. Once you focus the object at that objective, you can move up to a higher one. Once on the highest power objective, DO NOT USE THE COURSE ADJUSTMENT KNOB.

**Mishandling of the microscopes will lead to an automatic dean referral.

Magnification

Eyepiece

Arm

Objective lens

Course Adjustment Knob

Fine Adjustment Knob

Stage

• The eyepiece has a magnification of 10x.

• The objective lenses have magnifications of 4x, 10x, and 40x.

Multiple Choice

If I use the 40x lens with the 10x eyepiece, what is the total magnification?

• 14x
• 40x

• 400x

• 20x

Multiple Choice

The picture shows a piece of technology that has helped scientists.

Which of the following best explains how this piece of technology has helped scientists?

• It has helped scientists to see other planets.

• It has helped scientists to see other moons.

• It has helped scientists see very large objects.

• It has helped scientists see very small objects.

Multiple Choice

What do you use to focus the low power objective?

• eyepiece

• coarse adjustment knob

• fine adjustment knob

• body tube

Open Ended

What two parts of the microscope should you be holding when carrying it?

Multiple Choice

What part is # 9?

• Body tube

• base

• arm

• stage

Multiple Choice

What part is #1?

• Base

• Mirror

• stage

• stage clips

Multiple Choice

What part is AB?

• Stage

• Diaphragm

• Light Source

• base

Multiple Choice

Which part is D?

• Body tube

• fine adjustment knob

• coarse adjustment knob

• stage

Multiple Choice

Which part is C?

• Stage

• Fine Adjustment knob

• Coarse Adjustment Knob

• diaphragm

Multiple Choice

Which part is B?

• body tube

• eyepiece

• objective lens

• diaphragm

Multiple Choice

Which part is A?

• body tube

• eyepiece

• objective lens

• stage clip