Parts Of Microscops

Question 1

Base/Foot

Answer 1

Supports weight of microscope

Question 2

Arm

Answer 2

Used to hold and carry microscope. Tube and adjustment screws are attached to it.

Question 3

Stage

Answer 3

Square that supports the slide. It has a opening in the center where light passes through. Two stage clips to hold slide in position.

Question 4

Body tube

Answer 4

Positions eye piece and objectives at a suitable distance apart.

Question 5

Eye Piece

Answer 5

What you look through. Fits on top of tube. Usual magnification=10X.

Question 6

Nose Piece

Answer 6

Attached to bottom of tube. Rotated to select desired objective.

Question 7

Objectives

Answer 7

There are 3. Attached to nose piece. High power. Medium power. Small power.

Question 8

Diaphragm

Answer 8

Under the hole in the stage. Controls light by adjusting size of opening.

Question 9

Condenser

Answer 9

Below stage. Concentrates rays of light onto specimen. (Can’t be found on school microscopes)

Question 10

Light Source

Answer 10

Attached to base. Built in light/mirror. Reflects light into opening of stage.

Question 11

The Adjustment Screws

Answer 11

Move tube up/down to allow lenses to focus.

1. Coarse focus adjustment screw-large, moves tube rapidly for rough focusing.
2. Fine adjustment screw-smaller, makes final sharp, clear focus.

Question 12

Magnification of high power objective lens

Answer 12

x40

Question 13

Magnification of low power objective lens

Answer 13

10x

Question 14

Low power objective lens magnifies:

Answer 14

4x

Question 15

What does inverted mean

Answer 15

Upside down, back to front.

Question 16

Chromosome

Answer 16

Threadlike DNA containing body. Transmits heredity characteristics.