Ch. 4 Astronomy Test honors – Flashcards
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The fraunhofer lines in the solar spectrum are actually
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Absrobtion lines due to the thin outer layer above the photoshere
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What is spectroscopy
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An analysis of the ways in which matter emits and absorbs radiation
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Typical stellar spectra appear as
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A rainbow with dark lines mixed in
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The three laws dealing with the creation of various Spectra are due to what person
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Kirchoff
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What is a classical example of a continuous spectrum
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rainbow
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An incandescent light produces what kind of spectrum
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A continuum spectrum with the peak giving the temperature of the filament
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Positive ions are the result of what happening
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Electrons being stripped off the outer electron shell for hot atoms
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In an atom in which particles give the element identity
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Protiens
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Which particles in the Atom enter into a chemical reaction
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Electrons
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Varying isotopes are due to what particle in the Atom
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Neutrons
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If you have a negative ion what happened to the outer shell of the Atom
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Plus one electron to outer shell
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What discovery resulted from the photo electric effect
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Quantized revolution
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The particle that adds mass in and Atom but no charge is what
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Neutrons
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The most abundant form of hydrogen consists of what
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Protons and electrons
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Which is emitted from an atom when one of its electrons makes a transition from a higher to lower energy state
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Proton
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The classical model of the hydrogen atom that explains it's spectral line structure is due to what person
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Bohr
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Spectral lines are often referred to as the stars fingerprints because of what several things
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Both unique, both characteristic of one individual, easily characterized,fingerprints have individual lines that make a pattern
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The quantized nature of the atoms energy requires that light behaves how
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Behaves like a particle
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Einstein's noble prizes in physics was actually awarded for what
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Theoretical physics
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Why are molecular lines more complex than elemental spectral lines
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Molecules are the basis of life, they are heavier than Atoms, they vibrate and rotate, and they have two or more atoms
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The splitting of spectral lines and the presence of strong magnetic field is called what
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Zeeman effect
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The broadening of spectral lines can be caused by what
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Temperature, turbulence, rotation speed, density, and magnetic field.
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A low density gas must be hot in order to produce an absorption line. True/false
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True
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Kirchoffs laws tell us that the peak of the planck curve is inversely related to the temperature of the black body. True/false
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False
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The photo electric effect showed that light can behave like a wave or particle. True/false
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True
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In the bohr model and the transitions of electrons down to the ground state produce the Lymans lines and the ultraviolet. True/false
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True
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While Einstein discovered the nature of the photon it was Niels Bohr who discovered this concept with his model of the hydrogen atom. True/false
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False
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While using the bohr model, the spectrum of hydrogen is the easiest to understand. True/false
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True
