Which of the following statements are true? Select the best answer.

Question

BlackTom AI · Accepted Answer

The question asks which of the following statements are true, so we will evaluate each option.
Option 1: 'A planet covered with ice has a lighter surface and absorbs MORE solar radiation.' This is misleading because ice has a high albedo, meaning it reflects a large portion of sunlight. A lighter surface does not necessarily imply higher absorption; in fact, the high reflectivity of ice means it absorbs less solar radiation. Therefore, this statement is incorrect.
Option 2: 'A planet with no ice has a darker surface and absorbs LESS solar radiation.' If a planet has no ice, its surface is generally darker and has a lower albedo, which leads to greater absorption, not less. So this option contradicts the typical relationship between albedo and absorption and is incorrect.
Option 3: 'A planet with no ice has a darker surface and absorbs MORE solar radiation.' This aligns with the concept that reduced albedo (darker surface) leads to higher absorption of solar radiation. The reasoning follows from the inverse relationship between surface reflectivity and absorption. This option is consistent with standard planetary science expectations and is therefore correct.
Option 4: 'None of the other choices are correct.' Given the evaluations above, at least one other statement matches the known understanding of albedo and absorption, so this option is incorrect.
In summary, the reasoning shows that the statements about ice, surface color (darker vs. lighter), and absorption of solar radiation are tied to albedo: darker surfaces absorb more, whereas brighter (ice-covered) surfaces reflect more. The option that states a planet with no ice has a darker surface and absorbs more solar radiation is the one that coheres with this concept.

Which of the following statements are true? Select the best answer.单项选择题

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