2.4 USING A MICROSCOPE

Question 1

Parts of a microscope

Answer 1

Eyepiece
Arm
Objectice lens
Stage clip/Slide holder
Stage
Coarse focus
Condenser
Fine focus
Light (source)
Switch
Base

Question 2

How to work out a magnification?

Answer 2

Total magnification = Eyepiece lens magnification x Objective lens magnification

Question 3

Eyepiece

Answer 3

Part of a microscope where you look

Question 4

Arm

Answer 4

Supports and connects the eyepiece lens to the base; also a handle for carrying

Question 5

Focus knob

Answer 5

Used to bring object in and out of focus

Question 6

Objective lens

Answer 6

Gathers light from the specimen, magnifies the image of the specimen

Question 7

Stage

Answer 7

Platform that holds the slide for obeservation

Question 8

Light

Answer 8

Provides light to illuminate the specimen, sometimes used with a mirror

Question 9

Stage clip

Answer 9

Holds slide in place

Question 10

Objective lens

Answer 10

Different lens has different magnification

Question 11

Cover slip

Answer 11

Keep solid specimens pressed flat, and liquid samples shaped into a flat layer of even thickness

Question 12

Slide

Answer 12

Holds object for magnification under microscope

Question 13

Steps to placing a specimen

Answer 13

1. Add a drop of sterile water on slide
2. Place specimen on water
3. Place the edge of coverslip on slide so it touches the water
4. Slowly lower coverslip to prevent forming air bubbles
5. Ensure specimen is nicely under coverslip on slide
6. Place slide on stage