Question

most of the solar radiation that reaches earth is absorbed. however, the temperature of earth has not measured by physicists and geologists.
which is the main reason that the temperature of earth does not constantly increase?
○ a. earth radiates heat energy to space.
○ b. earth’s atmosphere reflects the solar radiation.
○ c. the energy is absorbed and warms only the inside of earth.
○ d. the clouds absorb the energy and prevent it from reaching earth’s surface.

Explanation:

To determine why Earth's temperature doesn't constantly increase, we analyze each option:

• Option A: Earth radiates heat energy to space. This is correct because for temperature to be stable, the energy absorbed (from solar radiation) must be balanced by energy emitted (radiated to space). If Earth only absorbed and didn't radiate, temperature would rise.
• Option B: Earth's atmosphere reflects solar radiation, but this affects how much energy is absorbed initially, not why temperature doesn't keep rising after absorption.
• Option C: The energy absorbed warms the surface and atmosphere, not just the inside, and this doesn't explain why temperature doesn't increase constantly.
• Option D: Clouds absorbing energy and preventing it from reaching the surface affects initial energy input, not the balance after absorption that keeps temperature stable.

Answer:

A. Earth radiates heat energy to space.