Can we predict the earthquake before it occurs a while? What is the maximum period?What are the signs of an earthquake soon?
Earth scienceAsked by: Plain Phab Can we predict earthquakes before they happen? No. Neither the USGS nor any other scientists have ever predicted a major earthquake. We do not know how, and we do not expect to know how any time in the foreseeable future. What is the maximum time of earthquake? A devastating earthquake that
Why is reverse osmosis desalination the dominant method used and not heat-based methods? Also why is brine being dumped back into the ocean?
DesertAsked by: Michael Tpc Why must reverse osmosis be used to desalinate ocean water? Reverse osmosis is not only the most advanced desalination system in the world today, it is the most efficient and beneficial for the planet: it generates up to four-and-a half-times fewer greenhouse gas emissions than all other technologies, it doesn’t harm
How did the Ural mountains form?
Earth scienceAsked by: Michael Tpc The Urals are among the world’s oldest mountain ranges, dated at 250 to 300 million years ago. They were formed during the Uralian orogeny due to the collision of the eastern edge of the supercontinent Euramerica with Kazakhstania. What type of plate boundary formed the Ural Mountains? The Urals are the
How did helium deposits form?
Earth scienceAsked by: Richard Byrd On Earth, helium is generated deep underground through the natural radioactive decay of elements such as uranium and thorium. “It takes many, many millennia to make the helium that’s here on the Earth,” says Sophia Hayes, a chemist at Washington University in St. Louis. How did helium get in the ore?
Slope of Saturation vapor pressure versus temperature-A parameter in Penman’s equation
Earth scienceAsked by: Richard Byrd What is the relationship between temperature and saturation vapor pressure? As the temperature rises, the saturated vapour pressure increases rapidly, and so does the density of the vapour, approaching that of the liquid. At a certain temperature the density of the vapour becomes equal to that of the liquid, and the
Change in earth mass since the time of the dinosaurs
Earth scienceAsked by: Ray Carrao Was there less gravity when dinosaurs were alive? My friend and fellow science writer Matthew Francis covers the gravity angle over at his blog – there’s no evidence that the Earth’s gravity was weaker during the heyday of the dinosaurs. Even as continents shifted around, the Earth’s gravity didn’t change. What
Electric permittivity of quartz
Earth scienceAsked by: Jeremy Whiteman The extracted dielectric permittivity of quartz as a function of frequency using the extraction method described in the text is depicted. A constant value of approximately 3.8 is obtained for the frequency range 1 to 40 GHz and on average 3.76 for the frequency range 140 to 210 GHz. What is
Why does the meandering pattern of the jet stream itself propagate?
Earth scienceAsked by: Jeremy Whiteman Why does the jet streams have a meandering tendency? Sometimes, like in a fast-moving river, the jet stream’s movement is very straight and smooth. However, its movement can buckle and loop, like a river’s meander. This will slow things up, making areas of low pressure move less predictably. The jet stream
Where did the atmosphere’s nitrogen come from?
NitrogenAsked by: Tammy Peters Nitrogen makes up 78 per cent of the air we breathe, and it’s thought that most of it was initially trapped in the chunks of primordial rubble that formed the Earth. When they smashed together, they coalesced and their nitrogen content has been seeping out along the molten cracks in the
Has irreversible global warming already begun?
Earth scienceAsked by: Tammy Peters The effects of human-caused global warming are happening now, are irreversible on the timescale of people alive today, and will worsen in the decades to come. How many years until global warming is irreversible? There is some indication the system has experienced a gradual weakening over the past few decades, and