Question

How does the sun give us heat if space may be a vacuum?

Answer 1

Hint :Heat is that the sort of energy that's transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also mentioned as heat or thermal energy. Heat is usually measured in Btu, calories or joules.

Complete Step By Step Answer:
Yes, in an initially perfect vacuum an object would lose heat. As heat flows into it, that radiation temperature goes up. Within the end of the day , the atoms also will reach equilibrium , as a number of them evaporate into the vacuum.
Unlike conduction and convection, radiation doesn't need interest transfer heat. Energy is radiated from the sun, through the vacuum of space at the speed of sunshine. When this energy arrives at Earth, a number of it's transferred to the gases in our atmosphere.
Hot bodies of matter like the sun – and even our own human bodies – give off heat. Because the matter’s atoms move and vibrate they provide off, or “radiate”, electromagnetic energy – this is often called “thermal radiation”.
Electromagnetic energy comes during a range, or spectrum, of types - a number of these we will see: they create up the rainbow of “visible light”. Other types that we cannot see exist too, like the infrared energy our hot bodies radiate and microwave energy we use to cook food.

Note :
There are three modes of warmth transfer in thermodynamics: convection, conduction and radiation. it's true that there's essentially no convection within the vacuum of space, so all heat generated is dissipated by infrared (electromagnetic waves that travel until they hit some object).