The solar radiation curve is
A) a dent in the spherical Sun.
B) the path of the Sun as it circles Earth.
C) a plot of Sun's brightness versus frequency of emission.
D) a plot of sunlight colors versus their frequencies.
E) a plot of light intensity versus temperature of the Sun.
Answer: C
You might also like to view...
What was the approximate temperature of the universe at an age of 5 minutes?
A) about 300 K B) about 106 K C) about 109 K D) about 1012 K
Which of the following is TRUE?
A) The center of the universe is located at a point about 200 Mpc from us in the center of a cluster of galaxies. B) At the time that the Big Bang expansion began, all matter and energy in our observable universe was compressed into a single point of space. C) It is possible for galaxies that are very distant to actually move through space at a speed several times the speed of light. D) A redshift occurs when a photon loses energy and slows down as it moves through space. E) We measure a redshift for roughly half of the galaxies that we observe, and for the others we measure a blueshift
The bending of light because of a speed change as it moves from one medium to another is called
a. diffraction. b. refraction. c. reflection. d. the Doppler effect.
According to general relativity, a black hole is
A) an object that cannot be seen. B) a hole in the observable universe. C) a place where light travels slower than the normal speed of light. D) a place where light travels faster than the normal speed of light. E) a place where there is no gravity.