Fun & Easy Science for Kids
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Boiling and Freezing Points  

That puddle of water in your driveway has turned to ice overnight. Have you ever wondered how cold the temperature must drop for water to freeze? Or how hot the water must be to boil for your mac and cheese?

Fun Facts

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  • Pure water boils at 212 degrees Fahrenheit (100 degrees Celsius).
  • Pure water freezes at 32 degrees Fahrenheit (0 degrees Celsius).
  • Salt water boils at slightly higher temperatures and freezes at slightly lower temperatures, depending on how much salt is in the water.
  • At high altitude, water boils at a slightly lower temperature. If you live in Denver, water will probably boil more quickly than if you live in California because Denver is at a higher altitude with lower air pressure.

Vocabulary

Boiling point: the temperature at which something boils (bubbles)

Freezing point: the point at which a liquid becomes solid, or conversely, the point above which a solid (ice) begins to melt (water)

Q and A

Question: Why does knowing the boiling and freezing point matter?

Answer: Gardeners pay close attention to the weather in the spring or fall. If the temperature dips down to 32 degrees, their plants may die. Knowing boiling and freezing points helps you understand temperature. You know that 32 degrees feels cold. You need a jacket and maybe gloves. Of course, air temperatures don’t rise to 212 degrees (thank goodness), but you know that when the weatherman predicts temperatures above 80 or 90 degrees, it’s time to pull out the swimming suits and sprinkler.

Learn More
Head over to Highlights Kids for an experiment about temperature.
Learn more about Celsius and Fahrenheit at Weather Wiz Kids.

 

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Declan, Tobin. " Boiling and Freezing Points Fun Facts for Kids ." Easy Science for Kids, Jul 2017. Web. 28 Jul 2017. < http://easyscienceforkids.com/boiling-and-freezing-points/ >.

APA Style Citation

Tobin, Declan. (2017). Boiling and Freezing Points Fun Facts for Kids. Easy Science for Kids. Retrieved from http://easyscienceforkids.com/boiling-and-freezing-points/

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