Multiple choice

Energy reaches the Earth from the Sun by radiation because radiation...

  1. doesn't need to travel through air

  2. will heat the air as it travels

  3. causes molecules to bump into each other

  4. causes air to rise and fall
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Radiation is the transfer of energy through electromagnetic waves. Unlike conduction or convection, radiation does not require a medium (like air or water) to travel through, allowing it to move through the vacuum of space.

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