Objective We will be able to identify part

Objective We will be able to identify part of a microscope (Goal 1).

Parts of the Microscope and Their Function On the next slide there is an image of a microscope, very similar to the scopes we use in class. Click on the boxes to see the name and function of each part of the microscope.

Click on Me Click on Me Click on Me Click on Me

#9 Ocular Lense—The part you look at with your eye. Usually 10 X magnification. Click Here to Return to the Main Slide

#10 Arm – Used to safely transport microscope Click Here to Return to the Main Slide

#11 Stage – Slides are placed on this Click Here to Return to the Main Slide

#12 Coarse Adjustment – Used to make large changes in focus. NOTE Never use this when viewing on high power Click Here to Return to the Main Slide

#13 Fine Adjustment – Used to make small adjustments of focus Click Here to Return to the Main Slide

#14 Base – Used to safely transport the microscope Click Here to Return to the Main Slide

#1 Tube – Reflects light up to the viewers eye Click Here to Return to the Main Slide

#2 Revolving Nosepiece – Allows for quick change of objectives Click Here to Return to the Main Slide

#3 Low Power Objective – The first lens you use when doing proper microscope work. Usually 4 X Click Here to Return to the Main Slide

#4 Medium Power Objective – The second lens you use when doing proper microscope work. Usually 10 X Click Here to Return to the Main Slide

#5 High Power Objective – The highest magnification used. Usually 43 X. NEVER use the course adjustment when using this lens. Click Here to Return to the Main Slide

#6 Stage Clips – Use to keep the slide in place. Click Here to Return to the Main Slide

#7 Diaphragm – Use to vary the amount of light passing through the slide. Usually it is better if the amount of light is low. Click Here to Return to the Main Slide

#8 Light Source – Sends light up through the diaphragm and through the slide for viewing Click Here to Return to the Main Slide

Images Produced by Light Microscopes Amoeba Streptococcus bacteria Anthrax bacteria Human cheek cells Plant cells Yeast cells

Microscope Magnification The ocular lens has a magnification of 10 x The objective lenses have magnifications of: Low: 4 x Medium: 10 x High: 40 x To find the total magnification: Ocular lens x Objective lens Example: ocular lens x high power = total magnification 10 x 40 = 400 (total magnification)

How to Carry a Microscope ALWAYS carry with the ARM and BASE

REMINDERS REMEMBER: All specimens must be thin for LIGHT to shine through them, otherwise they cannot be viewed clearly. REMEMBER: DO NOT use the COARSE adjustment knob when focusing on medium and high power objectives!! This could damage the objective and possibly break the slides and cover slips. If you cannot get it in focus, you should use the FINE ADJUSTMENT KNOB.

Whiteboard Challenge Rules Quickly record your answer to the questions Do not shout or share answers When I say “Boards Up, ” flip answers to the front

Name this part ARM

What is the total magnification if the LOW power objective is bring used? 40

What two parts of the microscope should be used to while carrying the microscope? ARM and BASE

Which adjustment knob is used to make small adjustments? FINE ADJUSTMENT KNOB

Which adjustment knob should NEVER be used when using the high power objective? COARSE ADJUSTMENT KNOB

What part of the microscope holds the slide in place? STAGE CLIPS

Microscope Lab Follow Careful Directions!!! We will be viewing: The letter ‘e’ under a microscope

Microscope & STERNGRR Scavenger Hunt

Exit Ticket Silently and Independently complete your Exit Ticket HW: Scientific Method Study Guide (last page of packet)