things that uses heat are striaghtners, ovens, stoves, phones, cars and others
You can heat things (for example, use a solar system to heat water, and use it to take a shower - or use a solar cooker to cook food), and you can generate electricity from the Sun's energy.
Heat makes things hot.
Scientists typically use a Bunsen burner to heat things, although there are certainly other ways. You would also use a ring stand, and probably an Ehrlemeyerflask, in the process of heating a solution.
The proper use for devices and equipment that produce heat require that they not be placed near other combustible materials. Combustible materials are things that can catch fire easily like paper or gasoline.
When you rub two things together, the friction between the two things will produce heat.
All snakes use heat sensors, they use them to find food, a shelter and what things are.
Anything that produces thermal energy
Living things use enzymes instead of a heat source of activation energy because they speed up chemical reactions as well as the metabolism in those living things.
It's a burner. It's used to burn or heat things.
You can heat things (for example, use a solar system to heat water, and use it to take a shower - or use a solar cooker to cook food), and you can generate electricity from the Sun's energy.
Food, shelter, clothing, medicines, weapons, heat
to heat certain things e.g water, rocks etc
To heat things up. Think of it as a single burner stove. It isn't a high heat like a stove but it is effective for heating soups and similar items. You can use frying pan on them, but it isn't usually an even heat.
TV, lights, appliances, heat, cooking, refrigeration and on and on.
Heat........
Adding sufficient heat would harm or kill a living thing.
Moving fluids convect heat, meaning they move heat from one location to another. A fluid is a liquid or a gas (vapor).