Multiple choice

The solar radiation coming to Earth is called

  1. Radiant energy

  2. Insolation

  3. Sunshine

  4. Terrestrial radiation

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Insolation is the specific technical term for incoming solar radiation reaching Earth's surface. Radiant energy is too generic and could refer to any electromagnetic radiation. Sunshine is an informal term. Terrestrial radiation refers to heat radiation emitted by Earth itself, not incoming solar energy.