Select True or False for the following statements about electromagnetic waves. a
ID: 1984438 • Letter: S
Question
Select True or False for the following statements about electromagnetic waves.a) Gamma rays can be produced through electrons oscillating in wires of electric circuits.
b) Blue light has a longer wavelength than red.
c) Ultraviolet radiation causes common sunburn.
d) X-rays travel in vacuum at a higher speed than the visible light.
e) The sun's radiation is most intense in the visible region.
f) A vertical automobile antenna is sensitive to electric fields polarized horizontally.
g) Radio waves have wavelengths longer than 1 m.
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Explanation / Answer
QUESTION: A) The sun’s radiation is most intense in the infrared region. B) Gamma rays can be produced through electrons oscillating in wires of electric circuits. C) Visible light is often emitted when valence electrons change their state. D) Blue light has a longer wavelength than red. E) Ultraviolet radiation causes common sunburn. F) A vertical automobile antenna is sensitive to electric ?elds polarized vertically. G) Radio waves have wavelengths longer than 1 m. ANSWER: A) False, since we can see the sun, the most intense radiation is in the visible spectrum. B) False, gamma rays can not be produced this way. Nuclear state transitions will produce gamma rays. C) True, valence electrons are the outer electrons of an atom. When these change states, visible light is emitted. D) False, from an electromagnetic spectrum chart, red has a longer wavelength than blue. E) True. F) True, if it were not, the atoms in the antenna would not have very far to move in order to pick up the signal. G) True.