Multiple choice

Which of the following requires no medium to travel?

a. Conduction b. Convection c. Radiation

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c

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

This is the correct option. Radiation does not require any medium to travel. Vast space between Earth and Sun is vaccum. Still, heat reaches the Earth.