I am going to tell you that really cool metal called Gallium. It looks a bit like Mercury and it turns into a liquid at about 30 degrees centigrade. That's about 85 Degrees Fahrenheit! (now that's warm) It's often used in the production of semi-conducters and in some LEDs (The More You Know) And when I got mine they came in a plastic test tube . You can see, at room temperature is solid and it won't flow out at all... So, I'm putting mine in a bowl of warm water to raise the temperature, After a few minutes, if you take it out you could see it's actually turned liquid. I'm tipping this out straight onto my hands. Which i've read it's safe to do so. But if you tried this, you may want to consider wearing gloves! And you can see this core from the center of the test tube which didn't have time to melt yet. (let's put it in the bowl of water to melt it) It feels a little wierd and it's sort of blobs together in the palm of your ha...
S ince the Industrial Revolution humans have released over 1.5 trillion tons of carbon dioxide or co2 into the Earth's atmosphere in the year 2019 we were still pumping out around 37 billion more that's 50 percent more than the year 2000 and almost three times as much as 50 years ago and it's not just co2 we're also pumping out growing volumes of other greenhouse gases such as methane and nitrous oxide combining all of our greenhouse gases we're emitting 51 billion tons of carbon dioxide equivalents each year and emissions keep rising but they need to get down to zero in recent years the consequences have become more serious and visible almost every year breaks some horrible record we've had more heat waves the most classiest melting and the lowest amount of ice ever recorded at the North Pole of the last 22 years 20 have been the hottest on record the only way to limit this rapid climate change is to decrease our collective emissions quickly but although all...
How To See Germs Spread Experiment (Coronavirus) I've always thought if we could somehow just see the germs around us everyone would be a lot more careful and we get sick way less unfortunately that's still not possible so I did the next best thing by running a day-long experiment in this third grade classroom I found this powder called Glo germ and just like real germs when it's on your hands you can't see it but unlike real germs if you turn a black light on it becomes visible but it transfers to things you've touched so provides a really good way to visualize exactly how germs spread so before the kids arrived as a control I went around and noted any pre-existing spots in the room that fluoresced under the blacklight and then it was go time because of course had no idea what we were doing and that the teacher had been secretly infected with the glowing powder so she randomly shook the hands of three kids but didn't touch any of the rest and so with ...
Comments
Post a Comment