Anything with people on board has to generate and give off heat.

For you, it would be as if fire suddenly stopped giving off heat.

They exploded, giving off more light and heat than a new star.

It does give off heat, so there is evidence of chemical change.

Your body gives off heat in order to cool itself.

He could feel her body as if she were giving off heat like a small star.

The fire will give off heat in a minute or two.

She wondered if it gave off heat that he could feel with his hands.

The glow did not give off heat this time, only the light.

It was larger than a pumpkin, and gave off light but not heat.