Unit 12 Heat

Unit 12 Heat
Heat is one kind of energy.
It makes things warm and hot.
You can't see heat!
But, if you stand next to a hot oven, you can feel warm.
This is the heat from the oven.
Where is the hottest heat in the universe?
The center of the sun is the hottest place in the universe.
It is 25 million℉(14 million ℃).