Microscopes Flashcards

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1
Q

what is the meaning of microscopic?

A

An object that can only be seen under a microscope.

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2
Q

What are microscopes used for?

A

Microscopes allow scientists to see the building blocks of life that make up all living things.

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3
Q

What is a light microscope?

A

A light microscope is a type of microscope used in schools and labs

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4
Q

What is the function of the eyepiece or ocular lens on a microscope?

A

To magnify the image.

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5
Q

What is the function for the coarse focus knob on a microscope?

A

To focus the image on low power.

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6
Q

What is the function for the fine focus knob on a microscope?

A

To focus the image on high power.

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7
Q

What is the function for the objective lens on a microscope?

A

To magnify the image.

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8
Q

What is the function for the stage on a microscope?

A

That is where the specimen is placed.

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9
Q

What is the function for the mirror or lamp on a microscope?

A

They direct light up through the stage and specimen.

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10
Q

What is the function for the handle on a microscope?

A

To carry the microscope.

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11
Q

How does a light microscope work?

A

Light from a mirror or lamp passes through the specimen. Then the light passes through a series of lenses making the specimen look bigger.

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12
Q

What is the name of the thing you see through the microscope?

A

An image.

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13
Q

What is a specimen?

A

A sample of an object or material.

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14
Q

What are the two different types of light microscopes?

A

A monocular microscope and a binocular microscope.

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15
Q

What is the difference between a monocular microscope and a binocular microscope?

A

A monocular microscope only has one eyepiece or ocular lens. A binocular microscope has two eyepieces or two ocular lenses.

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16
Q

What is a stereo microscope?

A

It is a microscope that collects data from two different directions.

17
Q

What dimension is the image in?

A

Three dimension.

18
Q

Does the stereo have a light source, if yes then what?

A

Yes, the light source can either come from a lamp or reflecting light from the sun.

19
Q

How does the stereo microscope create the image?

A

The microscope has light shining onto the specimen that is reflected back up through the lens to create the image.

20
Q

Does the specimen need any preparation when being looked at through a stereo microscope and why?

A

No, Because the light is reflecting off the specimen and not passing through the specimen.

21
Q

What is another name for a stereo microscope?

A

A dissecting microscope.

22
Q

Why is the stereo microscope also called a dissecting microscope?

A

Because the distance between the objective lens and the specimen is much greater than a light microscope.

23
Q

What is the meaning of a dissection?

A

a dissection is when a scientist cuts apart a dead plant of animal to study it.

24
Q

What happens when you move the specimen one direction with a stereo microscope?

A

The specimen appears to move in the same direction.

25
Q

What happens when you move the specimen in one direction with a light microscope?

A

The specimen appears to move in the opposite direction.

26
Q

What is the function for the objective lens?

A

To magnify the image.

27
Q

What is the function for the mirror or lamp for a light microscope?

A

They direct light up through the stage, specimen and objective lens.