Science | Science Experiment of the Week 7 | 275 - Hot Air Bottle

A great way to show how much air expands when it gets hot.

Finally, I Can Really Give Something Back!

I wish this could've been around when I was homeschooling. For the first time in my life, I'm not worried about how I'll earn an income. I’m not here to convince you to check it out, but I want to share that this is a once-in-a-lifetime opportunity that might disappear early next year (2025). Below, you’ll find a few of the products that I create videos for, earning a commission each time someone buys from my video. If you want to make more money than you ever dreamed, head over to TikTok and explore the TikTok Shop for Creators (it is 100% free). This is my way of giving back. I want everyone who needs a miracle like this to know about it!

Anyone Can Do This!



This Week's Experiment - #275 Hot Air Bottle

These experiments are from Robert Krampf - The Happy Scientist



This week's experiment is a simple one that I came across while washing dishes. Even thought it was an accidental thing, it really is a great way to show how much air expands when it gets hot. To try it, you will need:

a sink or bathtub of hot water
a plastic soft drink bottle or similar container

The first thing we need is a lot of hot water. You could fill the sink with hot water if it is time to wash the dishes, or you could fill the tub with water if it is time to take a bath. You need the water to be fairly deep, so you will have room to get most of the bottle under water. The water should be hot, but not hot enough to burn you.

Turn the bottle so that the opening is at the bottom and push it into the water. Hold the bottle there and watch the opening carefully. What happens? Air begins to bubble out of the bottle. As you watch, more and more air continues to come out. You may be quite surprised at how much air leaves the bottle.

Once the air stops coming out of the bottle, put the cap back on. Screw it on tightly. Then remove the bottle from the water. Place it on the table and watch it carefully. What happened? Slowly, the bottle collapses. Why?

When you put the bottle into the hot water, the air in the bottle gets warmer. As it warms up, the molecules move around more energetically. The molecules bounce against the bottle and the water with more force. This forces some of the air out of the bottle. As the air gets warmer and warmer, the air in the bottle pushes outwards more and more, causing more and more bubbles to come from the bottle.

When the air in the bottle had expanded all it is going to, you put the cap on the bottle and removed it from the water. At that point, the air in the bottle began to cool. The molecules moved less energetically, causing the air to exert less force on the sides of the bottle. The stronger pressure on the outside of the bottle crushes it inwards.

You can take this experiment a step farther by using a balloon. Put the balloon over the mouth of the bottle before you put it into the hot water. As the air heats up, it will inflate the balloon. Then remove the balloon to equalize the pressure. Put it back on the bottle and then remove it from the water. Now as the air in the bottle cools, it will exert less force and the stronger pressure on the outside will force the balloon into the bottle. Keep playing and you can discover all sorts of things, as well as having some fun.





Printables

Free printables for multiplication, roman numerals, state capitals, parts of speech, and more.

Math

Math exercises. Multiplication and roman numeral resources. Posters, charts, converters.

Exercises

Quizzes including world capitals, presidents in order, the elements, state flags, and more.

Middle Ages

Armour, castle games, recipes, quizzes, fashions, music, old world maps, medicine, and more.

Language Arts

Alphabet flash cards, printable high frequency words, and printable parts of speech chart.

Foreign Language

Spanish numbers to 20 and the Korean alphabet. Printable flash cards and charts.

Science

Science games and quizzes, posters, science experiments.

Science Experiments

Free Experiment of the Week from Robert Kramp's Science Education Co.

Social Studies

Posters, printables, the Lifeboat Game, fifty states resources, quizzes.

Tools

Reading systems, flashcard, worksheet and test makers, game creators, percentage calculator, timeline template.

Free Online Courses

Grade school and accredited high school, online public schools, foundational phonics, more.

Creativity

Stickfigure animations, build a web page and a website template for kids.

Music

Printable guitar and keyboard charts, ukelele chords diagram.

Freebies

Free books, posters, videos, software, kits, curriculum, courses.

Sharing What's Good

We're finding the good out there and sharing it.

Make Money Online

Easy extra money! Lots of info here.

Storage - 53 Years

Food intolerance, night flying wasps, and more.

Storage - Alextown

Maille armor pictures, ninja and camouflage pictures, and more.


If you have comments, questions, or would like to report a broken link, please send an email to Cheryl at byclc@live.com

© 2000-2024 Nicholas Academy
site map | privacy policy | by CLC | Micro-Ways