Earth's atmosphere is enormous, so far reaching that it even affects the International Space Station's route. But how did this giant gaseous envelope form? That is, why does Earth have an atmosphere? In short, our atmosphere is here because of gravity. When Earth formed, about 4.5 billion...
Earth Hour is a global environmental movement involving lights being switched off for an hour. It is held on a single day towards the end of March every year. The first "lights off" event took place in Sydney, Australia, in 2007, led by the World Wide Fund for ...
"Of course I could have looked it all up, but then I think you will fall at a certain moment. I think you cannot sustain that when the test is proctored again. And then it’s only annoying that you’re going to drop in your score again.” (#Interview 14). Fig. 2 Thematic map...
Ole Rømer was able to measure the speed of light by observing eclipses of Jupiter's moon Io. When Jupiter was closer to Earth, Rømer noted that eclipses of Io occurred slightly earlier than when Jupiter was farther away. Rømer attributed this effect to the time it takes for light ...
aMethane gas (甲烷、沼气)in the atmosphere is known as a “greenhouse” gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That’s an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators (...
But putting "clothes" on your house—by insulating it—is actually a very good idea: the more heat insulation you have, the less energy escapes, the lower your fuel bills, and the more you help the planet in the fight against global warming. Let's take a closer look!
Scientists believe that conditions on Mars around 3.8 billion years ago were very similar to those of the early earth when primitive organisms were spreading through our oceans. At that time Mars would have been much warmer and wetter than it is today with an atmosphere composed mainly of ...
Officials at the country’s National Center of Meteorology have been cited as saying the rain was not caused by cloud seeding. CNN has reached out to the center for comment. But even if the program did fly its planes through the sky leading up to the storm, it’s exceedingly unlikely the...
The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth extending to about five kilometers above the Earth’s surface. The following experiment is an easy one that you can do at home. But make sure that you are supervised (监督) because you will ...
often toxic ones, with large amounts of water andsand at high pressureto shatter the earth and rocks. Fracking is a controversial issue because of the number of natural resources it uses and the negative effects it can have on the air and water ...