Winds, the movement of gases in the atmosphere of a planet, are ultimately due to differences in atmospheric temperature. Winds on Earth are the result of heat from the Sun, but the Sun is much too far away from Jupiter to have any significant impact on the temperature of Jupiter' s atmosphere. Nevertheless, on Jupiter winds reach speeds many times those of winds found on Earth. Which one of the following, if true, most helps to explain the facts cited above about Jupiter and its winds?
A: Planets even farther from the Sun than Jupiter are known to have atmospheric winds.
B: Gaseous planets such as Jupiter sometimes have stronger winds than do rocky planets such as Earth.
C: Jupiter's atmosphere is composed of several gases that are found in Earth's atmosphere only in trace amounts.
D: Unlike Earth, Jupiter's atmosphere is warmed by the planet's internal heat source.
Choose A, B, C or D as your solution.
D