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Microscope
| Question | Answer |
|---|---|
| Magnifies an Image 10x; Attached to body tube | Ocular Lens/Eyepiece |
| Supports a slide | Stage |
| Moves the body tube up and down in large increments to allow gross positioning and focusing of the objective lens | Coarse Adjustment |
| Moves the body tube slightly to bring the image into slight focus | Fine Adjustment |
| Provides a light for viewing the image; Can be either a light reflected with a mirror or an incandescent light from a small lamp; NEVER used directed at sunlight as a light source | Light Source |
| Magnifies 4x | Scanning Objective |
| Further Magnifies the image 10x | Low-Power Objective |
| Further Magnifies the image 40x | High-Power Objective |
| Located under the stage; Controls the amount of light that is allowed to pass through the object being viewed | Diaphragm |
| Supports microscope | Base |
| Attatches 3 scanning objectives to microscope | Rotating Nosepiece |
| Attaches body tube to base | Arm |
| Allows light to pass through the specimen and uses two lenses to form an image: Eyepiece + Objective | Compound Light Microscope |
| The apparent increase in size of an image when viewed through a micrscope | Magnification |
| The power to show details clearly | Resolution |
| Use a beam of electrons to produce an enlarged image of the specimen; More powerful in magnification and resolution than light microscopes; Always in black and white (computers add artificial colors) | Electron Microscope |
| Specimens must be placed in a vacuum chamber, so ____________________ can't be used to view living specimens | Electron Microscope |
| Use a beam of electrons passed over the surface of the specimen to produce a 3-D image of the specimen's surface; Can magnify up to 100,000x | Scanning Electron Microscope (SEM) |
| Transmit a beam of electrons THROUGH a very thinly sliced specimen's internal structure; Can magnify up to 200,000x | Transmission Electron Microscope (TEM) |
| Used to make cell structures visible under the microscope | Biological Stains and Dyes |
| Dye used most often with animal cells | Methylene Blue |
| Dye used most often with plant cells | Iodine |
| How much of a specimen we can see | Field of View |
| Less amount of space seen | Higher Focus |
| Light decreases when you switch to high power | Brightness |
Created by:
hayyhayy56
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