Microscope Test

7th Grade Science 2026

Eyepiece (Ocular)

Magnifies the image formed by the objective lens

Course Adjustment

Moves the stage up, down, and focuses the image.

Fine Adjustment

Moves the stage slightly to sharpen the image.

Stage

The flat platform where you place your slides

Stage Clips

Clips that hold your slide in place.

Diaphragm

Helps you adjust the amount of light that reaches a specimen/slide

Revolving Nosepiece

Holds the objectives lenses and is able to rotate to change the magnification.

Objectives

From the first image of the specimen, found on the nose piece and range from low to high.

Arm

The part on the side that is used to support and carry the microscope.

Base

The bottom part of the microscope

Light Source (Illuminator)

A steady light source to help illuminate the slides.

You carry a microscope by the… and…

Arm, Base

Why should you not use the adjustment knob on high power?

Because you may crack or break your slide.

What should you always begin?

The Scanning Objective

If you see black in the view, what should you do?

Check to make sure the diaphragm is locked into place.

What should the lenses be cleaned with?

Lens Paper

To find magnification, what is the process?

Multiply the powers of the ocular and objective.