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Because the air that you breathe out has already been warmed while it was inside your body and it passes that warmth on to your hands.

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What if A woman picks up a cup of hot cocoa and feels her hands get warmer. What statement best explains what is happening?

The woman is feeling her hands getting warmer due to the transfer of heat energy from the hot cocoa to her hands. This transfer of heat occurs because of the temperature difference between the hot cocoa and her hands, resulting in her hands absorbing the heat from the cocoa.


When you rub your hands they become warm from where this energy comes?

The warmth that you feel when rubbing your hands comes from the friction generated between your hands. When you rub your hands together, the energy from the motion is converted into heat, warming up your hands.


What does rubbing your hands together make?

Rubbing your hands together generates friction, which creates heat. This can be useful for warming up your hands on a cold day.


Why do your hands warm up when you cause friction?

When you cause friction, the kinetic energy from the rubbing motion is converted into heat energy. This increase in heat energy warms up your hands as they come into contact with each other or with another surface.


As you sit by a Campfire and hold your hands to the flames they warm up you realize as you warm up that the molecules in you hands are actually moving are what?

As you warm up by the campfire, the heat causes the molecules in your hands to vibrate more rapidly. This increased molecular motion leads to the sensation of warmth that you feel. The heat energy from the fire is being transferred to your hands, causing the molecules in your skin to move faster.

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