From the center outward, which of the following lists the "layers" of the Sun in the correct order?
A) core, radiation zone, convection zone, corona, chromosphere, photosphere
B) core, corona, radiation zone, convection zone, photosphere, chromosphere
C) core, radiation zone, convection zone, photosphere, chromosphere, corona
D) core, convection zone, radiation zone, corona, chromosphere, photosphere
E) core, convection zone, radiation zone, photosphere, chromosphere, corona
C
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A heat pump takes in energy from a 250 K thermal reservoir outside a house and discharges 140 J of energy into a 350 K thermal reservoir inside a house. What is the minimum amount of work needed to make the pump work?
A. 67.0 J B. 50.0 J C. 40.0 J D. 37.0 J
According to Wien's Law, a(n) ____
a. hotter object will emit more short wavelength (bluer) radiation b. hotter object will emit more long wavelength (redder) radiation c. cooler object will produce less photons d. cooler object will produce more photons e. object will produce the same number of photons at different temperatures
Where are the Cepheid and RR Lyrae variable stars located on the H-R Diagram?
a. just above and to the right of B type stars b. just above and to the right of O type stars c. in the variable strip d. in the instability strip e. outside the H-R Diagram as missing items
Which of the following statements about the Moon is true?
A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its orbit. D) The Moon is visible only at night. E) The side of the Moon facing away from Earth is in perpetual darkness.