Because the fire gives off heat which makes us feel warm.
How does the fire give off heat?
It gives off heat in straight lines, and in every direction.
What is this giving off of heat called?
It is called Radiation of heat.
Does the sun radiate heat?
The sun does radiate or give off both heat and light.
How do heat and light from the sun come to us?
They come together in the sunbeam.
Does heat travel as rapidly as light?