Microscope

Question 0

Highest magnification power

Answer 0

White - 1,000

Question 1

What is the magnification power of each objective?

Answer 1

Red 40
Yellow 100
Blue 400
White 1000

Question 2

How should u carry a microscope ?

Answer 2

One hand- holding the arm

Other hand- bottom of the base

Question 3

Function of objective lenses

Answer 3

Adds magnification to the object being viewed

Question 4

Function of the eyepiece

Answer 4

Allows u to see the object 10 times larger than it actually is

Question 5

Function of the stage

Answer 5

Supports the slide being viewed

Question 6

Function of the mirror

Answer 6

Collects & directs light through the stage opening

Controls the amount of light being reflected

Question 7

Function of the diaphragm

Answer 7

Increases / decreases the amount of light entering through the stage opening (see the object clearly)

Question 8

Function of the coarse adjustment knob

Answer 8

Moves body tube, brings the object into view

Question 9

Function of the fine adjustment knob

Answer 9

Brings objects into sharp focus, moves the body tune slightly (focusing with high power lens)

Question 10

Do all microscopes have mirrors ?

Answer 10

No some have a built in light source like a light bulb.

Question 11

Give an example to find the total magnification for pairs of lenses

Answer 11

Eyepiece lens= 5x
Objective lens= 10x
Total mag=50x

Question 12

Why do u have to be careful when focusing with high power lenses ? Precautions ?

Answer 12

Do not hit or damage the slide below.
Look at the objective from the side
Do not use coarse knob to focus for high power objective lenses (use fine adjustment)

Question 13

When focusing with the coarse adjustment knob

Answer 13

Use it when focusing low power objectives to raise the body tube

Question 14

When using the fine adjustment knob

Answer 14

Use high power lenses
Turned no more than 1/4 to bring object into sharp focus on slide
Do not hit the slide with objectives

Question 15

10 cm away from the edge of the table ?

Answer 15

Reduces risk of microscope falling or getting knocked off the table

Question 16

Low power lenses before high?

Answer 16

Easier to find the tiny area on the slide being observed under low power

Question 17

Microscope slide held by the edges ?

Answer 17

Slide needs to be bacteria and oil free so it doesn’t interfere with the observation

Question 18

Low power to high should the diaphragm be closed or open?

Answer 18

Open slightly to increase light. Object is closer, don’t want to hurt eyes but need more light to see detail

Question 19

Cell theory has 3 essential parts what are they?

Answer 19

All organisms are composed of 1 or more cells

Cells are the basic units of structure and function in an organism (basic unit of life)

Cells come only from the reproduction of existing cells