What is Scanning Electron Microscopy? - Theory & Applications


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Why might someone use a scanning electron microscope (SEM) instead of an optical microscope?

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1. Which of the following is NOT an example of a signal given off by the sample in a scanning electron microscope when it is struck by the electron beam?

2. Which of the following is true about backscattered electrons?

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About This Quiz & Worksheet

The quiz/worksheet combo aids in testing your knowledge of scanning electron microscopes (SEM). When these microscopes can be useful and backscattered electrons are addressed on the quiz.

About This Quiz & Worksheet

You'll be tested on the following topics:

  • Why someone would use an SEM instead of an optical microscope
  • Components of backscattered electrons
  • An industrial and academic field that would benefit from an SEM
  • Examples of signals given off by the sample in an SEM when struck by the electron beam

Skills Practiced

  • Information recall - access the knowledge you have gained about why you would use secondary electrons as opposed to backscattered electrons when creating an image
  • Reading comprehension - ensure that you draw the most important details from the lesson on scanning electron microscopy
  • Interpreting information - verify that you can read information about why an SEM would be preferred over an optical microscope and interpret it correctly

Additional Learning

Keep learning by looking through the lesson called What is Scanning Electron Microscopy? - Theory & Applications. This lesson allows you to:

  • Determine what microscopes do
  • See how optical microscopes work
  • Compare and contrast secondary and backscattered electrons