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thermal
this energy is conduction or thermal energy
This transfer of heat is called convection.
conduction
CONVECTION
Yes, all ovens/cookers require some energy (fuel) input in order to get them to heat up. For example electric hobs require an electrical imput, gas cookers require gas as their fuel (energy) etc... Even solar cookers have a solar energy input.
You use Natural gas for gas cookers
It can be burned in gas cookers, or gas fires or used in power stations to fuel turbines which drive alternators to make electricity.
No
thermal
Some benefits of free standing gas cookers are that it offers instant heat, gas is much cheaper than electricity, and costs much less than an electric cookers.
this energy is conduction or thermal energy
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Electronic cookers are not more popular than gas cookers. It normally depends on where you are or where you live, since some complexes or houses can also have electric cookers.
heating boilers, gas cookers
light gas
convection