Year 8 - Lesson 2 - Microscope Knowledge Quiz

Which objective lens must you always start on when using a microscope?

• High-power lens (40x)

• Medium-power lens (10x)

• Low-power lens (4x)

• Oil immersion lens (100x)

How should you properly hold and carry a microscope?

• By gripping the stage and the eyepiece

• By holding the base and arm securely

• By carrying it with one hand under the objective lens

• By tilting it while walking

Why should you never touch the objective lens?

• It might get fingerprints on it

• It can break easily

• It can damage the sample and affect focus

• It is very expensive

What is the correct order of steps for setting up a microscope?

• Turn on the light, adjust focus, place slide, select objective lens

• Place slide, select lowest objective lens, adjust focus, turn on the light

• Select lowest objective lens, place slide, turn on light, adjust focus

• Adjust focus, turn on light, place slide, select objective lens

What part of the microscope is used to focus on a specimen at high power?

• Coarse adjustment knob

• Fine adjustment knob

• Stage clips

• Diaphragm

What is the total magnification when using a 10x eyepiece with a 40x objective lens?

• 10x

• 40x

• 50x

• 400x

What is the function of the diaphragm on a microscope?

• To hold the slide in place

• To adjust the amount of light passing through the sample

• To magnify the specimen

• To change the objective lens

Why do you start with the lowest power objective lens when focusing on a specimen?

• To avoid damaging the slide and make focusing easier

• To zoom in faster on small details

• To make sure the image appears upside down

• To see the specimen in color

When increasing magnification, what should you do to keep the specimen in focus?

• Only use the fine adjustment knob

• Turn the coarse adjustment knob a lot

• Move the slide around quickly

• Use a lower-power objective lens

If an image appears blurry under high magnification, what should you do?

• Switch back to a lower magnification

• Increase the amount of light

• Move the microscope closer to the slide

• Shake the microscope slightly