There are no auroras on Venus because it
A) is too hot. B) lacks atmospheric oxygen.
C) lacks a strong magnetic field. D) lacks strong winds.
C
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Scientists hypothesize that a process of chemical evolution eventually concentrated various small molecules into the most stable larger forms
Indicate whether the statement is true or false
Our earliest atmosphere, formed by outgassing, was much poorer in ________ than now
A) carbon dioxide B) hydrogen C) oxygen D) methane E) nitrogen
What is the magnitude and direction of the gravitational force that acts on a person who weighs 500 N at Earth's surface?
What will be an ideal response?
If a spring-operated gun can shoot a pellet to a maximum height of 100 m on Earth, how high could the pellet rise if fired on the Moon, where g = 1.6 m/s2?
A) 17 m B) 160 m C) 3.6 km D) 100 m E) 610 m