thermal energy section 2

effects of thermal pollution

Increasing the water temperature can cause fish and other aquatic organisms to use more oxygen. Because warmer water contains less dissolved oxegen than cooler water, some organisms can die to a lack of oxygen.

reducing thermal pollution

Thermal pollution can be reduced by cooling the water produced by factories, power plants, and runoff before it is released to a body of water. In this case cooling towers are used.

what is a conductor?

a conductor is any material that easily transfers heat.

what is a insulator?

an insulator is a material in which heat doesn't flow easily

what is conduction?

conduction occurs when the particles in a material collide with neighboring particles.

When does forced convection occur?

forced convection occurs when an outside force pushes a fluid , such as air or water, to make it move and transfer heat.

what is heat?

heat is thermal energy that is transferred from one object to another when the objects are at different temperatures.

what is radiation?

heat transfer by radiation occurs when energy is transmitted through electromagnetic waves.

what is natural convection?

natural convection occurs when a warmer, less dense fluid is pushed away by a cooler, denser fluid.

what is specific heat?

the amount of heat needed to raise the temperature of 1 kg of that substance by 1 degrees Celsius.

what is thermal pollution?

the increase in the temperature of a body of water caused by adding warmer water.

what is convection?

transfer of thermal energy by the movement of molecules from one part of a material to another.

transferring heat by convection?

warm water rises and is replaced at the bottom of the pot by cooler water. The cooler water is heated, rises, and the cycle is repeated until all the water in pan is at the same temperature.

transfer of heat

when heat is transferred, thermal energy always moves from warmer to cooler objects.