Understanding Orders of Magnitude in Measurement
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Questions and Answers

What is the resolving power of a light microscope?

  • 200nm (correct)
  • 0.2nm
  • 10nm
  • 1µm
  • What is the maximum magnification of an electron microscope?

  • 2,000x
  • 2,000,000x (correct)
  • 200,000x
  • 20,000x
  • Which type of electron microscope creates 3D images?

  • Scanning electron microscope (SEM) (correct)
  • Transmission electron microscope (TEM)
  • Electron microscope
  • Light microscope
  • What is the wavelength of electrons used in electron microscopes?

    <p>Smaller than that of light waves</p> Signup and view all the answers

    Which microscope has a resolving power of 0.2nm?

    <p>Transmission electron microscope (TEM)</p> Signup and view all the answers

    How does the resolving power of a microscope impact the level of detail seen?

    <p>The lower the resolving power, the more detail is seen</p> Signup and view all the answers

    If an object is 1000 times bigger than another, how many times bigger is it in orders of magnitude?

    <p>3</p> Signup and view all the answers

    What is the prefix for multiplying a unit by 0.001?

    <p>Milli</p> Signup and view all the answers

    If an object is 10 times smaller than another, how many times smaller is it in orders of magnitude?

    <p>-1</p> Signup and view all the answers

    What is the result of $3.4 \times 10^3$ in standard form?

    <p>3400</p> Signup and view all the answers

    When estimating the number of dandelions in a field, what does multiplying the count from one square by the number of squares give you?

    <p>A rough approximation</p> Signup and view all the answers

    What is the value of $1.5 \times 10^{-5}$ expressed in standard form?

    <p>0.000015</p> Signup and view all the answers

    What is the main advantage of using an electron microscope over a light microscope?

    <p>Greater ability to examine proteins in detail</p> Signup and view all the answers

    Which formula is commonly used to calculate the size of an object in microscopy?

    <p>Size of image / magnification = size of object</p> Signup and view all the answers

    In microscopy, what role does standard form play when working with large or small numbers?

    <p>Allows for comparing numbers by multiplying by powers of 10</p> Signup and view all the answers

    Why does the 'number' being multiplied by a power of 10 in standard form need to be between 1 and 10?

    <p>To ensure accurate comparison between numbers</p> Signup and view all the answers

    When dealing with very large or very small numbers in microscopy, what can be achieved through standard form?

    <p>Simplification of calculations by adjusting scale</p> Signup and view all the answers

    How do electron microscopes contribute to scientific discoveries compared to light microscopes?

    <p>Detailed examination of proteins not possible with light microscopes</p> Signup and view all the answers

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