EVERYDAY SCIENCE

Detailed explanation-1: -It takes more heat energy to raise the temperature of water by one degree than to raise the temperature of steam by the same amount. When a refrigerant condenses it gives up energy as heat to its surroundings. When a refrigerant evaporates it adds energy as heat to its surroundings.

Detailed explanation-2: -As a form of energy, heat is conserved-it cannot be created or destroyed. It can, however, be transferred from one place to another. Heat can also be converted to and from other forms of energy.

Detailed explanation-3: -If its atoms or molecules are moving slower, then it has a lower temperature. What is conduction? Conduction occurs when two substances at different temperatures are in contact. Energy is always transferred from the substance with the higher temperature to the one at lower temperature.

Detailed explanation-4: -Heat never flows from a cooler object to a warmer object. The warmer object loses thermal energy and becomes cooler as the cooler object gains thermal energy and becomes warmer. This process of heat transfer can occur in three ways-by conduction, radiation, or convection.

Detailed explanation-5: -Heat is a form of energy because it is emitted from a source. It flows from a hotter body to a colder body and this transfer is by thermal interactions.