Yellowstone sits above a spot in the Earth's mantle where columns of hot, molten rock called plumes rise to form volcanoes in the planet's crust. This spot is called a hotspot, and it creates atype of volcano no
There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil. the polluted air does great harm to people’s health. The polluted water causes diseases and death. What is more, vegetation had been ...
A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. Even so, light-years measure distance. Here on Earth we are used to measuring all distances in either inches...
These hypothetical particles are among the top contenders. They would have mass and interact via gravity and possibly the weak nuclear force, but not with light or electromagnetism, which would make them invisible. Large underground detectors have been trying to catch one of these elusive particles ...
So 6.67 x 10-8 dyne is a miniscule force. When you deal with massive bodies like the Earth, however, which has a mass of 6 x 1024 kilograms (see How much does planet Earth weigh?), it adds up to a rather powerful gravitational force. That's why you're not floating around in ...
“I think the main reason why we are able to do this modeling now is that our understanding ofearly Earth tectonicshas been drastically improved in the last few years,” Korenaga said. “That work concentrated on theevolution of continental crustand thephysics of magma oceans.” ...
It is the first nonwhite, non-Western country to reach this status since the 1600s. The determination of this country is indescribable. Supernatural. There is no force that can stop it from accomplishing anything it wants to do. Forty years ago a flush toilet in China was a luxury. Today...
If primordial black holes were indeed formed soon after the Big Bang, looking for Hawking stars could be one way to find them. “Even though the Sun is used an exercise, there are good reasons to think that Hawking stars would be common in globular clusters and ultra-faint dwarf galaxies,...
2 Scanning and Sensemaking Despite the important role of organizational processes and behavior (OB) to this book, we have to come clean from the start with a basic truth: Even good OB won't save bad strategy. The links between the two are so strong that the converse is true: A great...
If this is true, why do I have to wait half an hour for a bus nearly every day? The rules say that if there are empty seats on a bus, the bus must stop at every stop where people are waiting Why do the half-empty buses go straight(一直)past me when I am standi...