Consider the following statements: (a) The radiation reflected back to the atmosphere is called albedo. (b) The atmosphere is essential in maintaining the heat balance of the body. (c) The heat and sunlight both pass through the atmosphere. Which of the statements(s) given above is/are correct?
(a), (b) and (c)
To determine the correctness of the given statements, let's analyze each one:
- Statement (a): The radiation reflected back to the atmosphere is called albedo.
- Explanation: Albedo refers to the fraction of solar energy (shortwave radiation) reflected from the Earth back into space. It is a measure of the reflectivity of the Earth's surface. Hence, this statement is correct.
- Statement (b): The atmosphere is essential in maintaining the heat balance of the body.
- Explanation: The atmosphere plays a crucial role in Earth's heat balance. It traps heat and allows life-sustaining radiation from the sun to reach Earth's surface, maintaining a habitable climate. This statement is correct.
- Statement (c): The heat and sunlight both pass through the atmosphere.
- Explanation: The atmosphere allows sunlight and heat (infrared radiation) to pass through but with some filtration and scattering. It also plays a role in absorbing some of that energy. Thus, this statement is correct.
From the analysis above, all statements (a), (b), and (c) are correct. Therefore, the correct answer is:
(a), (b) and (c)
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