gas
it used to cook and heat.
To warm the house, to cook food.
The energy used to cook food in a microwave is a form of electromagnetic energy. Microwaves emit radiation in the form of electromagnetic waves that cause water molecules in the food to vibrate, generating heat and cooking the food.
calculators,cars ,cook food
Uh..., you heard of an egg cooking on a sidewalk?
Heat energy is used to cook food by transferring heat to the food, causing it to cook or bake. It is also used in heating systems to warm buildings or water for various domestic and industrial purposes.
Radio waves are used to cook in millions of kitchens every day. They're the carrier of the energy that fills the so-called "microwave" oven.
covection?
The propane gas is being chemically converted to heat energy during the combustion process in the gas stove. This heat energy is then used to cook the food, resulting in a transformation from chemical energy to thermal energy.
electrical energy of when you turn the oven on to thermal energy when it is heating up
When charcoal is used as fuel for a barbecue, chemical energy stored in the charcoal is converted into thermal energy (heat) through combustion. This heat is then used to cook the food on the grill.
To keep us warm, to cook our food, to run our engines, to wash our clothes, ....