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 (A)</p> Signup and view all the answers

Which microscope has a resolving power of 0.2nm?

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

What is the prefix for multiplying a unit by 0.001?

<p>Milli (A)</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 (C)</p> Signup and view all the answers

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

<p>3400 (D)</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 (A)</p> Signup and view all the answers

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

<p>0.000015 (C)</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 (A)</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 (B)</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 (C)</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 (B)</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 (C)</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 (C)</p> Signup and view all the answers

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