Microscopes Flashcards
what is the meaning of microscopic?
An object that can only be seen under a microscope.
What are microscopes used for?
Microscopes allow scientists to see the building blocks of life that make up all living things.
What is a light microscope?
A light microscope is a type of microscope used in schools and labs
What is the function of the eyepiece or ocular lens on a microscope?
To magnify the image.
What is the function for the coarse focus knob on a microscope?
To focus the image on low power.
What is the function for the fine focus knob on a microscope?
To focus the image on high power.
What is the function for the objective lens on a microscope?
To magnify the image.
What is the function for the stage on a microscope?
That is where the specimen is placed.
What is the function for the mirror or lamp on a microscope?
They direct light up through the stage and specimen.
What is the function for the handle on a microscope?
To carry the microscope.
How does a light microscope work?
Light from a mirror or lamp passes through the specimen. Then the light passes through a series of lenses making the specimen look bigger.
What is the name of the thing you see through the microscope?
An image.
What is a specimen?
A sample of an object or material.
What are the two different types of light microscopes?
A monocular microscope and a binocular microscope.
What is the difference between a monocular microscope and a binocular microscope?
A monocular microscope only has one eyepiece or ocular lens. A binocular microscope has two eyepieces or two ocular lenses.
What is a stereo microscope?
It is a microscope that collects data from two different directions.
What dimension is the image in?
Three dimension.
Does the stereo have a light source, if yes then what?
Yes, the light source can either come from a lamp or reflecting light from the sun.
How does the stereo microscope create the image?
The microscope has light shining onto the specimen that is reflected back up through the lens to create the image.
Does the specimen need any preparation when being looked at through a stereo microscope and why?
No, Because the light is reflecting off the specimen and not passing through the specimen.
What is another name for a stereo microscope?
A dissecting microscope.
Why is the stereo microscope also called a dissecting microscope?
Because the distance between the objective lens and the specimen is much greater than a light microscope.
What is the meaning of a dissection?
a dissection is when a scientist cuts apart a dead plant of animal to study it.
What happens when you move the specimen one direction with a stereo microscope?
The specimen appears to move in the same direction.
What happens when you move the specimen in one direction with a light microscope?
The specimen appears to move in the opposite direction.
What is the function for the objective lens?
To magnify the image.
What is the function for the mirror or lamp for a light microscope?
They direct light up through the stage, specimen and objective lens.
