heat

occurs when solid particles are heated as they occupy more space.

occurs when solids are cooler as particles occupy less space.

the energy that is stored within an object. Objects that are not in motion possess potential energy.

a measure of the average kinetic energy of the particles with in a object.

the energy transferred between two objects at different temperatures.

energy cannot be created or destroyed, it can only change forms.

the energy possessed by an object or system due to the movement of particles within.

heat transfer is the contact of hot and cold objects. this happens because the hot particles transfer their energy into the cold particles.

convection, conduction and radiation.

Conduction is the most common form of heat transfer and occurs via physical contact. this happens because of the the vibrating particles touching each other.

When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along.

this is because the hot particles create more kinetic energy therefore the cold dense particles sink.

warmer objects lose heat to surroundings and cold objects gain temperature to reach room temp.

Radiation travels through the atmosphere via electromagnetic waves. The hotter the object, the more heat it radiates.