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Description
Flashcards by Jannat Abbas, updated more than 1 year ago
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Created by Jannat Abbas
over 5 years ago
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| Question | Answer |
| Making Things Bigger: Using Microscopes | |
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1. What does 'magnified' mean?
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Being made bigger. |
| 2. What is a microscope and how does it help scientists? | An instrument used to make very tiny things look bigger. It's useful when scientists need to zoom into very small specimens. |
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3. What is a specimen?
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The object being looked at through the microscope. |
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4. What is a light microscope?
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A microscope that uses light to reveal the image. |
| 5. What is an image (in scientific terms)? | What is seen through the microscope. |
| 6. What is the difference between a LIGHT microscope and a BINOCULAR microscope? | LIGHT MICROSCOPE: has one ocular lens BINOCULAR MICROSCOPE: has 2 ocular lens |
| 7. What are the different parts of the microscope and what do they do? | |
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Eyepiece and Objective Lens
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Magnifies the image |
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Stage
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Where the specimen is placed |
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Mirror/Lamp
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Directs light up through the stage and specimen |
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Handle
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For carrying the microscope |
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Fine Focus Knob and Course Focus Knob
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Fine Focus: used to focus the image on high power Course Focus: used to focus the image on lower power |
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8. What is a Stereo Microscope?
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A binocular microscope that creates a 3D image |
| 9. What is a dissection? | To cut apart a dead plant or animal to study it |
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10. What is magnification?
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Magni (binary/octet-stream)
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The amount by which the image is magnified compared to the real object (specimen) |
| 11. What is a micrometre? | 1000th of a millimeter or one millionth of a metre. Used for measuring very tiny objects as millimetres might be too big. |
| 12. What is an electron microscope and what is it used for? | A microscope that uses beams of electrons to magnify up to 1 million times. Its used for higher magnification. |
| 13. What are the 2 types of electron microscopes and what do they stand for? | SEM: Scanning Electron Microscopes TEM: Transmission Electron Microscopes |
| 14. Comparing TEM and SEM microscopes... |
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