Im here because we have experiment but we have a virus thats what you call COVID - 19 and the classes are suspended so we have Online Classes and our Teacher send this link then she said that we need to watch this
Safety glasses for a fire? What is that going to do? Your hand is closest. Do the safety glasses prevent your body from catching on fire? (sarcasm obviously)
It's not really heat conduction but rather natural convection that allows the balloon not to burst. The heat transfer coefficient for water in natural convection can be very large such that the temperature at the balloon/flame interface can remain low. In fact, you can probably get the water to boil if the melting temperature of the balloon is above 100C. As such, the balloon would pop rather readily if the experiment were conducted in microgravity.
The true explanation why a balloon pops when you get it near a flame is that the air inside it expands and so the ballon pops as the air inside seems to increase and take more space so more force is exerted in the rubber balloon causing it to pop. But anyway it is a nice experiment.
No, the balloon could have been blown up a little more and still not popped. I've done this experiment with students where the balloon is only half full of air and yet it still pops (when it does NOT have water in it) during the experiment. Think about what you saw - You don't see the balloon expand and then pop. Heat didn't cause the balloon to expand to the point it popped. The flame caused a chemical reaction in the latex of the balloon, creating a fracture in the balloon. Imagine sticking a needle in the balloon...it will pop. That is what happened. Good thought process relating temperature and pressure (Gay-Lussac's Law) but unfortunately that isn't the reason the balloon popped.
Isn't this about specific heat capacity rather than conduction? Water is a poor conductor so won't take heat from the rubber balloon easily but at least the water doesn't change temperature much even though it is absorbing a lot of energy.
Yes and No. The water in contact with the balloon surface does experience conduction "at the surface". Beyond that, was specific heat means it absorbs heat while slowly increasing in temperature. While water does not really conduct, it convects the heat in form of currents within the volume it occupies. A transparent balloon would help facilitate an attentive observer as well as some evaporation of water within the balloon. As it cools, the water droplets on the surface would demonstrate the transfer of energy. Speaking of forms of energy transfer, this demonstration also illustrates how the flames generate radiant energy, "radiation" which actually heats the balloon surface.
Enjoy your day going 😘 if there this video has been checked this morning then we have attached my resume in this email has been checked this morning from this video free download 😁 t shirt this video started playing this video has been
Fantastic video! My son enjoys watching you and following your directions with the experiments. Thank you, you're a great addition to our science class!
If air doesn't conduct (implying collisions) how does greenhouse theory work then? How does the atmosphere transfer heat if it doesn't conduct and it doesn't radiate? Something is wrong. It must radiate.
Well everything in reality radiates. Also, air conducts heat just fine. It’s just that it doesn’t conduct heat as well as metals like copper or aluminum. But yes, air conducts heat through collisions.
Grade: 7 Name: Eileen Smith Question: When the candle was smothered by the watered balloon, i stopped the video when the candle was smothered...... Wouldn't the air inside is hot and as it gets cooler and as you would know, the balloon stuck to the candle...... The outside air pressure would kinda beat the inside pressure. So it would stick if you picked it up right? Let me finish the video now..... YYEEEEEEESSS!!!!
