Quiz 2 Flashcards

1
Q

What are the 6 types of electromagnetic radiation?

A
  • Visible Light
  • Infrared
  • Radio
  • Ultraviolet
  • X-Ray
  • Gamma Ray
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2
Q

What are the three main parts of an atom?

A
  • Proton
  • Neutron
  • Electron
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3
Q

When the light from a star is passed through a prism a rainbow or spectrum appears with some of the colors missing. What are three things that we can learn about a star by studying these missing colors carefully?

A
  • The chemical composition of the star.
  • The temperature of the star.
  • How the star is moving towards or away from us by the Doppler shift.
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4
Q

Atoms that have the same number of protons but a different number of neutrons are called:

A

Isotopes.

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5
Q

As an electron orbits around an atom it tends to move at certain specific distances like lanes on a freeway. The paths are called:

A

Energy levels or orbitals.

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6
Q

When photons of light bump into an atom the atom will absorb the photon and cause the electron to go into an excited energy state only if:

A

The energy of the photon is very close to the energy difference between energy levels in an atom.

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7
Q

Wein’s Law states that wavelength of maximum intensity of a black body:

A

Decreases with temperature (becomes bluer).

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8
Q

A telescope that uses a mirror to concentrate its light is called:

A

A reflecting telescope.

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9
Q

The Stephan-Boltzman Law says that the energy emitted by a black body varies as what power of the temperature?

A

4

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10
Q

The Doppler Effect states that when an object moves away from us its light is shifted towards what part of the spectrum?

A

The red end.

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