Is putting ice cubes into soup convection, conduction or radiation

Conduction

Explanation:

Because the ice cube is touching the surrounding soup, the energy is going from the hot soup into the ice cube. You can rule out radiation and convection because radiation includes rays (which aren't a part of this question) and convection is usually seen in objects/fluids that are not touching (and the ice cube and the soup ARE touching).

double the distance = divide strength by 4

answer///terminator or twilight zone;