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Physics Quiz 2

Physics Quiz Possible Questions

QuestionAnswer
What was Rutherford's probe particle? The alpha particle
What is the mass and charge of the alpha particle? 7400 times the mass of the electron, positive charge
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.
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.
Who is the most important person in Quantum Physics? Max Planck
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.
As the temperature increases, the "peak" frequency _________________, and the "peak" wavelength __________________. increases, decreases
As the temperature decreases, the "peak" frequency _________________, and the "peak" wavelength __________________. decreases, increases
As the temperature increases, the intensity ________________ at all frequencies. increases
What happens to the e-m radiation as the temperature increases? It becomes "brighter"
What did Max Planck do? He quantized the energy of light
What is a quantum? A single "bundle"
What is a quanta? Plural of quantum
What is Planck's Constant? 4x10^-15 eV-sec
What does 1 eV equal in Joules? 1.6x10^-19 Joules
What is eV? A unit of energy appropriate in the atomic realm
What happens when light shines on a metal? Electrons are emitted from the metal
What is a photon? A particle of light
What is lowest possible energy of a system called? The ground state
How does the atom emit light? It changes it's own internal energy
What does "h" represent in Bohr's equation? Angular momentum
What was Broglies's (the "prince's") crazy idea? Electrons might come in waves instead of particles
Created by: stonely on 2011-02-23



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