GEOLOGY

Detailed explanation-1: -Convection can take place only through liquids and gases. Radiation is independent of the material. when we pick up a cup of hot coffee, heat is transferred from the cup to our hands. Since cup is solid there is no question of convection.

Detailed explanation-2: -The heat from a person’s hand transfers by conduction to the ice, causing it to melt.

Detailed explanation-3: -Q. Hot air balloons rise because the heated air is less dense than cold air, so as the warm rises as the molecules spread out. The cold air is pushed downward, where it is also heated and rises.

Detailed explanation-4: -Another example of heat radiation is solar energy, which is energy that comes from the sun. The sun’s heat travels through space and then through the earth’s atmosphere.