Q49.
Consider the following statements: I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth’s surface. II. Heat absorbed and trapped by the atmosphere maintains our planet’s average temperature. III. Atmosphere’s gases, like carbon dioxide, are particularly good at absorbing and trapping radiation. Which of the statements given above are correct?
Answer
C
Explanation
atmosphere is a mixture of gases that surrounds Earth. It helps make life possible by providing us air to breathe, shielding us from harmful ultraviolet radiation coming from the Sun, trapping heat to the planet, and preventing extreme temperature between day and night. Without the temperatures would be well below everywhere on Earth's surface. This is because atmosphere plays a crucial role in trapping heat the natural greenhouse effect, preventing of the outgoing infrared radiation from escaping space. Hence, statement I is correct. The heat and trapped by our atmosphere keeps our average surface temperature at a balmy 15°C Some of the atmosphere's gases, like carbon are particularly good at absorbing and trapping Changes in the amounts of these gases affect our climate. Hence, statements II and III correct.