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PHYSICS

JAMB 2011 - Question 22

Physics 2011 JAMB Past Questions - Question 22: The ground is always cold at night because the

Choose the correct answers from the options given.

The ground is always cold at night because the

A: sun nolonger shines at night

B: atmosphere reflects the sun's energy at night

C: atmosphere absorbs sun energy at night

D: earth radiates heat to the atmosphere at night

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Correct Answer

Explanation

The ground is always cold at night because the Earth's surface loses heat through radiation. During the day, the Sun's rays warm the ground, but at night, the absence of sunlight causes the ground to cool down. The heat stored in the ground is gradually released into the atmosphere, resulting in colder temperatures. Additionally, the lack of direct sunlight during the night prevents the ground from receiving any additional warmth.