Astronomy Chapter 3 Homework – Flashcards
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The Doppler Effect is a phenomenon that allows one to measure an object's:
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radial motion
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Which of the following does NOT demonstrate the wave nature of light?
A. Diffraction
B. Polarization
C. Interference
D. The Corpuscular Theory
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D The Corpuscular Theory
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What fraction of the entire electromagnetic spectrum is spanned be visible light?
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Visible light covers a tiny fraction of the electromagnetic spectrum.
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Which of the following is true for electromagnetic waves?
A. They require a material medium to travel through.
B. They are created by moving charged particles
C. All types of waves travel at different speeds in a vacuum
D. The longest-wavelength waves have the highest frequency.
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B. They are created by moving charged particles.
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The shape of a blackbody curve depends on what single property of the blackbody?
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Temperature.
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The number of waves that pass a point each second measures which of the following?
A. Wave period
B. Frequency
C. Amplitude
D. Wavelength
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B. Frequency
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Which of the following types of electromagnetic waves has the shortest wavelength?
A. Infrared
B. Radio
C. Visible
D. X-Ray
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D. X-Ray
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Wien's law states that the wavelength of the peak radiation emitted by a blackbody is __________ the temperature of a blackbody.
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inversely proportional to
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As they are heated from low to high temperature, solid objects will appear to glow in which of the following sequence of colors?
A. Blue, green, yellow, then red
B. White, red, then yellow
C. Red, blue, then green
D. Red, reddish-yellow, then white
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D. Red, reddish-yellow, then white
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Which of the following is true regarding the speed of light?
A. Its value is 300,000 km/hr
B. The speed of light increases when it travels through matter.
C. The speed in space varies with wavelength
D. It is constant for all electromagnetic waves traveling in a vacuum.
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D. It is constant for all electromagnetic waves traveling in a vacuum.
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Stefan's law states that the total energy radiated by a blackbody depends on the ________ power of the temperature of the blackbody.
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Fourth
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A wave's velocity is the product of the:
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frequency times the wavelength of the wave.
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The number of waves passing the observer per second is:
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the frequency in Hertz.
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If a wave's frequency doubles, its wavelength:
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is halved
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Consider a diagram where a wave has a height of 4 and a distance of 6. Which statement is true?
A. The amplitude is 12.
B. The amplitude is 4.
C. The amplitude is 8.
D. The amplitude is 6.
E. The amplitude cannot be determined from this diagram.
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B. The amplitude is 4
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Both sound waves and electromagnetic radiation:
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transfer energy
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Electromagnetic Radiation:
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Can behave both as a wave and as a particle.
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Star A and Star B have the same temperature, but different luminosities. What can you infer about these two stars?
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Nothing can be inffered from the information given.
