![]() You need:įill about 1 cm of water into the soda can, and hold it over the flame until the water starts boiling and steam starts coming out of the opening. This experiment is fairly straightforward. The force and speed at which the can – or a drum – whatever you have on you is crushed demonstrates the awe-inspiring amount of atmospheric pressure and makes you really appreciate how we are adapted to survive! Set up: Why this is a great experiment: Students can have a hard time visualizing and understanding how the atmosphere has weight and exerts pressure, especially since they can’t feel it/see it/or touch it. This is one of my favorite experiments to do because it demonstrates the power of atmospheric pressure even though it is something we don’t feel every day. When you release the pressure, the temperature inside the bottle drops slightly, allowing the vapor to expand and condense into a cloud.Ī cloud is basically vapor condensed around dust/dirt particles in the air – by forcing the vapor to condense and providing something to condense around, we can make a cloud in a bottle! When you increase the pressure, the water or alcohol vapor starts getting compressed and pushed together. Rubbing alcohol evaporates faster, and may give you a denser cloud. You can also do this using rubbing alcohol(don’t use a match in this case). Pull the seal off the bottle, and you’ll get a beautiful cloud inside the bottle! Hold it in!Īfter 5-10 pumps, you have created a decent amount of pressure. Seal the bottle with the pump, and start pumping air into the bottle.Īs you increase the pressure by pumping more air, you’ll find that the seal may want to pop off. Light a match, put it out, and hold it in the bottle so some smoke goes in. Set up:įill about half a cm or so of water in the bottle and swirl it around so it wets the bottom sides of the bottle. You’ll be able to see how water vapor condenses around aerosols to make a cloud. ![]() Why this is a great experiment: Cloud formation normally takes a long time – this experiment is a neat way for students to visualize this vital life-giving process. Making a cloud in a bottle is really fun and exciting! It happens nearly instantly, too. ![]() ![]() If young children are doing these experiments, be sure to supervise them! 1) Cloud in a bottle( credit) We’re not dealing with dangerous chemicals in any of these experiments but protective eyewear is an absolute must in any case. These are 11 of my favorite experiments to do with my students – all of them will have them curious and most importantly enjoying the moment and learning! Safety precautionsįirst and foremost, the most important thing to keep in mind before doing any science experiment is SAFETY.īe sure to wear protective goggles for your eyes, and protective gloves when necessary. Having taught earth science, I know how hard it can be to make it fun for your students. However, that’s what makes it all the more fun! Unlike chemistry and physics, demonstrating earth science phenomena requires a little more creativity than heading over to a lab and simply replicating the concept. Earth science can be a lot of fun…or it can be incredibly boring!
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