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Related Flashcards
Cards In This Set
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Which of the following objects is obeying Newton's laws of motion?
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All of the choices are correct
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Which of the following objects is experiencing the Earth's gravitational force?
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All of the choices are correct
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Consider an apple falling off a tree. Which of the following apply to this situation?
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Only the apple is attracting the Earth and the Earth is is attracting the apple apply
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Newton's modification of Kepler's 3rd law allows astronomers to determine the _____ of celestial objects.
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Mass
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If the distance between two objects doubles, the gravitational attraction between them becomes half.
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False
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Which of the following lists Electromagnetic Waves in increasing order of wavelength?
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X-rays, Ultraviolet, Visible Light, Infrared, Radio Waves
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Which of the following lists Electromagnetic Waves in increasing order of frequency?
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Radio Waves, Infrared, Visible Light, Ultraviolet, X-Rays
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Which of the following spectra will result from a hot tenuous gas?
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Emission lines characteristic of the atoms/molecules in the gas
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A star moving away from the Earth at high speed will show:
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Red shifted spectral lines
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Star X has a surface temperature of 6000 K, and appears yellow. Star Y appears red. What can we conclude about star Y?
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It's surface temperature is lower that 6000 K
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What is an atmospheric window?
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A range of wavelengths of electromagnetic radiation which transmit through the Earth's atmosphere
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Which of the following can be determined from Wien's law?
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The temperature of the surface of the Sun
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What determines the identity of a chemical element?
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The number of protons in the nucleus
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An ordinary light bulb emits light by heating a metal filament. What kind of spectrum do you expect to observe from the incandescent light bulb?
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Continuous emission spectrum
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What causes the colors observed in the common rainbow?
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None of the choices are correct
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