| A | B |
|---|
| SEM | Scanning Electron Microscope |
| TEM | Transmission Electron Microscope |
| CT Scan | Computed Tomography |
| MRI | Magnetic Resonance Imaging |
| In what year did Anton van Leeuwenhoek make his discovery? | 1676 |
| Van Leeuwenhoek called the creatures he discovered... | animalcules |
| An example of a simple microscope is a ... | magnifying glass |
| What instrument magnifies images? | a microscope |
| Optical microscopes... | use light to produce magnified images. |
| a lens | a curved piece of glass that bends the light |
| An example of non-glass lenses are... | an eye, a drop of water |
| Compound light microscope | has more than one lens |
| ocular lens | is the lens closest to the eye |
| objective lens | is the lens closest to the object |
| To find the total magnification of an object.. | multiply the ocular lens times the objective lense. |
| The maximum magnification for a compound light microscope is .. | 1000 times |
| SEM/TEMs can magnify up to.. | one million times |
| An electron microscope uses.... | electrons and magnets to magnify images. |
| An SEM beams electrons at an image and... | the electrons are reflected back, producing a 3 dimensional image. |
| A TEM beams electrons at an image and... | the image is displayed on a TV screen. |
| A disadvantage for SEM/TEM is that.. | the object must be sliced very thin and placed in a vacuum. |
| Xrays | radiation that passes through soft material, but cannot pass through dense material. |
| An MRI can help us to study the body.... | without injuring any living tissue. |
| What can show up to 720 cross sections of an object? | A CT scan which then has the computer analyzes. |
