The full Moon is brighter than Venus regardless of how bright Venus is in the sky on any night as viewed from Earth
a. True
b. False
Indicate whether the statement is true or false
True
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What is Stefan’s law?
What will be an ideal response?
The star named Sheat is of M2 II spectral type and luminosity class. Based on this information, which of the following are true? I. Sheat has a surface temperature less than the sun. II. Sheat has a diameter that is greater than that of the sun. III. Sheat is more luminous than the sun. IV. Sheat is located near the upper left hand corner in the HR diagram
a. I & II b. II & IV c. II, III, & IV d. I, II, & III e. I, II, III, & IV
Light waves reflected off a body of water are strongly polarized in the horizontal direction. To reduce glare polarized sunglasses are made
A. with the transmission axis horizontal. B. with the transmission axis vertical. C. with the transmission axis at 37°. D. Polarized sunglasses don’t help with glare
Which of the following statements about the evolution of high-mass stars is NOT correct?
A. High-mass stars can fuse elements heavier than helium in their core. B. High-mass stars evolve much faster than low-mass stars. C. The life of a high-mass star ends with a supernova explosion. D. High-mass stars do not have a helium flash. E. High-mass stars stop fusing elements once they reach a carbon-filled core.