# Different ways to transfer Thermal Energy

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Different ways to transfer Thermal Energy

## 2. Everyday examples of convection: Boiling water - The heat passes from the burner into the pot, heating the water at the bottom. later, the hot water rises and cooler water moves down to replace it, causing a circular motion. Steaming cup of hot tea - The steam is showing heat being transfered into the air. Ice melting - Heat moves to the ice from the air. This causes the melting from a solid to liquid.

### 2.1. Radiation: Is the process by which energy in the form of electromagnetic radiation, is emitted by a heated surface in all directions and travels directly to its point of absorption at the speed of light; thermal radiation does not require a mediating medium to convey it. The intensity and distribution of radiant energy is governed by the temperature of the emitting surface. Example: The heating of the Earth by the Sun is an example of transfer of energy by radiation.

2.1.1. Electromagnetic radiation: Is energy that is propagated through free space or through a material medium in the form of electromagnetic waves, such as radio waves, visible light, and gamma rays. It is also referred to the emission and transmission of such radiant energy.

2.1.1.1. Absorption: in wave motion is the transfer of the energy of a wave to matter as the wave passes through it.

2.1.1.1.1. Conduction: Is the transfer of energy in the form of heat or electricity from one atom to another within an object by direct contact. Conduction occurs in solids, liquids, and gases. Metals can be good conductors of heat but non- metals and gases are usually poor conductors of heat that are called insulators. Heat energy is conducted from the hot end of an object to the cold end. Examples of good conductors: metals, such as silver, copper, iron, and aluminum.

## 3. Examples of conduction: Light bulbs give off heat and it you touch one that is on, your hand will get burned. A radiator is a good example of conduction. Anything placed on the radiator will become warm.

### 3.1. REFERENCES

3.1.1. (n.d.). Retrieved April 09, 2018, from What is Thermal Energy? - Definition & Examples - Video & Lesson Transcript | Study.com

3.1.1.1. Britannica, T. E. (1998, July 20). Absorption. Retrieved April 10, 2018, from Absorption | physics

3.1.1.1.1. (n.d.). Retrieved April 10, 2018, from Electromagnetic Radiation

### 3.2. Elert, G. (n.d.). Convection. Retrieved April 09, 2018, from Convection – The Physics Hypertextbook

3.2.1. Examples of Convection. (2016, June 16). Retrieved April 10, 2018, from Examples of Convection

3.2.1.1. Glencoe, Physics Principles & Problems (2013) United States

3.2.2. Glencoe Physics Principles & Problems (2013) United States