Heat (Thermal energy)
Thermal energy is what we call energy that comes from heat. For example, a cup of hot tea has thermal energy in the form of kinetic energy from its particles. When you pour some milk into your tea, some of this energy is transferred to the particles in cold milk. What happens next? The cup of tea is cooler because it lost thermal energy to the milk.
We cannot discuss Thermal Energy without touching on Temperature.
Temperature
The temperature of an object is to do with how hot or cold it is, measured in degrees Celsius (°C). A thermometer is used to measure the temperature of an object.
Let's look at two examples to see the difference between
heat and temperature.
A swimming pool at 30°C is at a lower temperature than a cup of tea at 80°C. But the swimming pool contains more water, so it stores more thermal energy than the cup of tea.
To boil water we must increase its temperature to 100°C. It takes longer to boil a large beaker of water than a small beaker because the large beaker contains more water and needs more thermal energy to reach 100°C.
Thermal energy is what we call energy that comes from heat. For example, a cup of hot tea has thermal energy in the form of kinetic energy from its particles. When you pour some milk into your tea, some of this energy is transferred to the particles in cold milk. What happens next? The cup of tea is cooler because it lost thermal energy to the milk.
We cannot discuss Thermal Energy without touching on Temperature.
Temperature
The temperature of an object is to do with how hot or cold it is, measured in degrees Celsius (°C). A thermometer is used to measure the temperature of an object.
Let's look at two examples to see the difference between
heat and temperature.
A swimming pool at 30°C is at a lower temperature than a cup of tea at 80°C. But the swimming pool contains more water, so it stores more thermal energy than the cup of tea.To boil water we must increase its temperature to 100°C. It takes longer to boil a large beaker of water than a small beaker because the large beaker contains more water and needs more thermal energy to reach 100°C.
Now let's see three very important forms of heat energy transfer.
These are Conduction, Convection and Radiation
These are Conduction, Convection and Radiation
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