Why is Mars so much colder than the Earth?
A) because the albedo of Mars is higher than the Earth
B) because Mars has a much thinner, more diffuse atmosphere
C) because Mars has a little less gravity than the Earth
D) because Mars is farther from the Sun
B
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Our Sun and its planets were formed about _____
A) 2.2 billion years ago B) 4.6 billion years ago C) 5.2 billion years ago D) 6.1 billion years ago
In the equation A = B/C, the A and B are said to be _______________ proportional
a. directly b. inversely c. not d. exactly
If it were about 80 times as massive as present, Jupiter could become a star
Indicate whether the statement is true or false
According to Wien's displacement law, if the absolute temperature of a radiating blackbody is tripled, then the peak wavelength emitted will change by what factor?
a. 1/3 b. 1 c. 3 d. 9