Microscopes Flashcards
(25 cards)
What is a microscope?
A microscope is an instrument used to see objects that are too small to be seen by the naked eye.
True or False: The compound microscope uses two or more lenses.
True
Fill in the blank: The __________ of a microscope is the part that holds the objective lenses.
nosepiece
What is the function of the objective lens?
The objective lens magnifies the specimen.
Which part of the microscope is used to adjust the focus?
The focus knob
What is the total magnification if the eyepiece is 10x and the objective lens is 40x?
400x
True or False: Light microscopes can only magnify up to 1000x.
True
What is the purpose of the diaphragm in a microscope?
The diaphragm controls the amount of light that reaches the specimen.
Multiple Choice: Which of the following is NOT a part of a microscope? a) Stage b) Coarse focus c) Emitter
c) Emitter
Fill in the blank: The __________ is used to hold the slide in place on the stage.
stage clips
What type of microscope uses electrons instead of light?
Electron microscope
True or False: The ocular lens is located at the top of the microscope.
True
What is the purpose of the stage on a microscope?
The stage supports the slide containing the specimen.
Multiple Choice: Which microscope is best for viewing living cells? a) Light microscope b) Electron microscope c) Fluorescence microscope
a) Light microscope
Fill in the blank: The __________ increases the brightness of the image in a microscope.
light source
What is the main advantage of using a microscope?
It allows for the observation of small details and structures in specimens.
True or False: The higher the magnification, the smaller the field of view.
True
What does the term ‘resolution’ refer to in microscopy?
Resolution refers to the ability to distinguish two close objects as separate.
Multiple Choice: Which part of the microscope helps to adjust the light intensity? a) Illuminator b) Diaphragm c) Objective lens
b) Diaphragm
Fill in the blank: The __________ lens is the lens closest to the specimen.
objective
What is a common use for microscopes in a school laboratory?
To observe cells and microorganisms.
True or False: Microscopes can only be used for biological specimens.
False
What is the function of the arm of the microscope?
The arm supports the body tube and connects it to the base.
Multiple Choice: Which of the following is a feature of a stereo microscope? a) 3D imaging b) High magnification c) Electron beams
a) 3D imaging
