Book 22, Question 72 · Video
How Much Heat Does a Person Give Off?
Sitting still, your body is giving off heat. In fact, you are about as warm as a bright light bulb! A group of twenty people in a room gives off about as much heat as twenty light
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What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How much heat does a person give off?
The Big Idea
Sitting still, your body is giving off heat. In fact, you are about as warm as a bright light bulb! Let's find out why.
Food Energy
Step one: food energy. The energy comes from the chemical energy in food that your cells use to stay alive. Even at rest, your cells are always busy.
Like a Bulb
Step two: like a bulb. A person at rest gives off about as much heat as a bright old-fashioned hundred-watt light bulb. That heat warms the air around you.
A Crowd Warms
Step three: a crowd warms. That is why a crowded room warms up quickly. When you exercise, you give off even more heat, and your body sweats to cool off.
A Closer Look
Let's take a closer look! Food gives your cells energy. A resting body is like a bulb. A crowd adds many bulbs. Sweat helps you cool down.
Quick Facts
Quick facts! A group of twenty people in a room gives off about as much heat as twenty light bulbs. Exercise makes your body give off even more heat. Sweat helps you cool off. Remember, that is why a crowded room warms up quickly.
Think Like a Scientist
Now, think like a scientist! Hold a thermometer in the air of a quiet room. Write down the temperature. Check it again after a group has been there for half an hour. Did the room warm up? Tell a grown-up what you discover!
Outro
A resting person gives off about as much heat as a bright old-style light bulb, which is why crowded rooms warm up. You are a living heater! Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!