Physics Quiz Possible Questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What was Rutherford's probe particle? | The alpha particle
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| What is the mass and charge of the alpha particle? | 7400 times the mass of the electron, positive charge
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| Describe Rutherford's experiment. | He shot alpha particles at gold atoms. Although most alpha particles went straight through the gold foil or were very slightly deflected by the electrons, some alpha particles were bounced completely back or at a crazy angle.
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| What did Rutherford's experiment show Rutherford? | That the only way to have back-scattering was to have the atoms have a point like nucleus.
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| Who is the most important person in Quantum Physics? | Max Planck
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| What is the definition of Blackbody Radiation (a.k.a. Incandescence)? | All bodies produce a continuous spectrum of electromagnetic radiation when their temperature is greater than zero Kelvin.
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| As the temperature increases, the "peak" frequency _________________, and the "peak" wavelength __________________. | increases, decreases
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| As the temperature decreases, the "peak" frequency _________________, and the "peak" wavelength __________________. | decreases, increases
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| As the temperature increases, the intensity ________________ at all frequencies. | increases
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| What happens to the e-m radiation as the temperature increases? | It becomes "brighter"
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| What did Max Planck do? | He quantized the energy of light
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| What is a quantum? | A single "bundle"
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| What is a quanta? | Plural of quantum
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| What is Planck's Constant? | 4x10^-15 eV-sec
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| What does 1 eV equal in Joules? | 1.6x10^-19 Joules
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| What is eV? | A unit of energy appropriate in the atomic realm
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| What happens when light shines on a metal? | Electrons are emitted from the metal
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| What is a photon? | A particle of light
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| What is lowest possible energy of a system called? | The ground state
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| How does the atom emit light? | It changes it's own internal energy
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| What does "h" represent in Bohr's equation? | Angular momentum
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| What was Broglies's (the "prince's") crazy idea? | Electrons might come in waves instead of particles
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