Chapter 6 Review
At the same time an astronaut on the moon sees a solar eclipse, observers on Earth see A) a lunar eclipse. B) a solar eclipse. C) no eclipse at all.
A
Color depends on what characteristic of light? A) its frequency B) its amplitude C) both of these
A
If the speed of light in a medium is 1.5 × 108 m/s, the medium's index of refraction is A) 2.0. B) 0.67. C) 1.0. D) 1.5. E) None of the above
A
Materials generally become warmer when light is A) absorbed by them. B) reflected by them. C) transmitted by them. D) all of these E) none of these
A
Sunburns are produced by A) ultraviolet light. B) visible light. C) infrared light. D) all of these E) none of these
A
The atomic number of an element is the same as the number of its A) protons. B) neutrons. C) nucleons. D) neither of these
A
The sources of X-rays and gamma rays, respectively, are A) electron clouds and the atomic nucleus. B) the atomic nucleus and electron clouds. C) both electron clouds. D) both the atomic nucleus. E) none of these
A
When a light beam emerges from water into air, the average light speed A) increases. B) decreases. C) remains the same.
A
Which of the following is fundamentally different from the others? A) sound waves B) X-rays C) gamma rays D) light waves E) radio waves
A
Your image in a plane mirror is A) virtual. B) real. C) both of these D) neither of these
A
A lunar eclipse occurs when the A) sun passes into Earth's shadow. B) moon passes into Earth's shadow. C) Earth passes into the sun's shadow. D) Earth passes into the moon's shadow.
B
A mixture of cyan and yellow pigments appears A) orange. B) green. C) magenta. D) blue. E) blackish brown.
B
Compared to its average speed in air, the average speed of a beam of light in glass is A) more. B) less. C) the same.
B
Compared to ultraviolet waves, the wavelength of infrared waves is A) shorter. B) longer. C) the same.
B
Different colors are dispersed by a prism because different colors in the prism have different A) frequencies. B) speeds. C) directions. D) energies. E) none of these
B
Electromagnetic waves consist of A) compressions and rarefactions of electromagnetic pulses. B) oscillating electric and magnetic fields. C) particles of light energy. D) high-frequency gravitational waves.
B
Generally speaking, the larger a nucleus is, the greater its A) stability. B) instability. C) neither stability nor instability
B
Light is emitted when an electron A) is boosted to a higher energy level. B) makes a transition to a lower energy level. C) neither of these
B
Light will almost always travel from one place to another along a path of least A) distance. B) time. C) effort. D) expense. E) complication.
B
Object and image for a plane mirror lie A) along the same plane. B) equal distances from the mirror. C) at right angles to each other. D) all of these E) none of these
B
The energy of a photon depends on its A) speed. B) frequency. C) amplitude. D) all of these E) none of these
B
What do electrons have that protons always have in equal magnitude? A) mass B) charge C) energy D) all of these E) none of these
B
What is the frequency of an electromagnetic wave that has a wavelength of 300,000 km? A) less than 1 Hz B) 1 Hz C) more than 1 Hz
B
When ultraviolet light is incident upon glass, atoms in the glass A) are forced into vibration. B) resonate. C) pass the light energy along practically undiminished. D) freely absorb and re-emit most of the ultraviolet light.
B
A single raindrop illuminated by sunshine disperses A) a single color. B) either low-, middle-, or high-frequency colors in most cases. C) all the colors of the rainbow.
C
Compared to radio waves, the velocity of visible light waves in a vacuum is A) less. B) more. C) the same.
C
Consider light energy that is momentarily absorbed in glass and then re-emitted. Compared to the absorbed light, the frequency of the re-emitted light is A) considerably less. B) slightly less. C) the same. D) slightly more. E) considerably more.
C
If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes A) for the sun to disappear. B) to operate receiving equipment in the dark. C) for light to travel from the sun to the Earth. D) all of these E) none of these
C
Light travels fastest in A) warm air. B) cool air. C) a vacuum.
C
Rainbows exist because light is A) reflected. B) refracted. C) both of these D) neither of these
C
Refraction results from differences in light's A) frequency. B) incident angles. C) speed D) all of these E) none of these
C
The atomic mass number of an element is the same as the number of its A) protons. B) neutrons. C) nucleons. D) none of these
C
The brightest color emitted by the sun is A) red. B) orange. C) yellow-green. D) green-blue. E) violet.
C
The complementary color of blue is A) red. B) green. C) yellow. D) cyan. E) magenta.
C
What color light is transmitted by a piece of blue glass? A) red B) white C) blue D) yellow E) orange
C
What is the wavelength of an electromagnetic wave that has a frequency of 1 hertz? A) less than 1 m B) 1 m C) more than 1 m
C
When an alpha particle is ejected from a nucleus, the nucleus then has less A) mass. B) charge. C) both of these D) neither of these
C
Which of these electromagnetic waves has the shortest wavelength? A) radio waves B) infrared waves C) X-rays D) ultraviolet waves E) visible light waves
C
Which radiation has no electric charge associated with it? A) alpha rays B) beta rays C) gamma rays D) all of these E) none of these
C
A sheet of red paper will look black when illuminated with A) red light. B) yellow light. C) magenta light. D) cyan light. E) none of these
D
Amongst the following media, a beam of light travels fastest in A) glass. B) water. C) plastic. D) air. E) is the same in each of these
D
Astronomers can tell whether a star is approaching or receding from Earth by A) its temperature. B) its change in temperature. C) its absorption spectra. D) the Doppler effect. E) all of these
D
Atoms can be excited by A) thermal agitation. B) electron impact. C) photon impact. D) all of these E) none of these
D
Different colors of light correspond to different light A) velocities. B) intensities. C) polarities. D) frequencies. E) none of these
D
Interference is a property of A) light waves. B) sound waves. C) water waves. D) all of these E) none of these
D
Most of the waves in the electromagnetic spectrum are A) red light. B) blue light. C) green light. D) invisible for humans.
D
The greenish blue of water is evidence for the A) reflection of greenish-blue light. B) reflection of red light. C) absorption of greenish-blue light. D) absorption of red light. E) interaction between green and blue frequencies of light.
D
The half-life on an isotope is one day. At the end of three days, how much of the isotope remains? A) none B) one-half C) one-quarter D) one-eighth E) none of these
D
The highest frequency light of those below is A) red. B) green. C) blue. D) violet. E) all the same
D
When a gamma ray is emitted by a nucleus, the nucleus then has appreciably less A) mass. B) charge. C) both of these D) neither of these
D
Which color of light carries the most energy per photon? A) red B) green C) blue D) violet E) all the same
D
A red crab very deep in water, where sunlight is dim, appears A) red. B) orange. C) cyan. D) brown. E) no color - black.
E
Light refracts when traveling from air into glass because light A) has greater intensity in air than in glass. B) has greater intensity in glass than in air. C) has greater frequency in air than in glass. D) has greater frequency in glass than in air. E) travels slower in glass than in air.
E
The half-life of a radioactive substance is INDEPENDENT of A) the number (if large enough) of atoms in the substance. B) whether the substance exists in an elementary state or in a compound. C) the temperature of the substance. D) the age of the substance. E) all of these
E
The main difference between a radio wave and a sound wave is their different A) frequencies. B) wavelengths. C) energies. D) amplitudes. E) modes of travel.
E
