介绍地震的英语小短文

The earthquake grade is an unit that is use to mean the earthquake size, it is carry on by influence and destructive degree( namely earthquake intensity)s according to the earthquake ground of hour and buildings demarcation.Therefore, discuss the earthquake grade and must contact the earthquake intensity together.Currently, though the world has the big body the same standard to the ratings of the earthquake, involve the concrete nation will still have the dissimilarity slightly.List the our country demarcation form concerning earthquake intensity and the earthquake grade below, make net friend have to the earthquake class to know more rationally.

英文： Earth's Inner Core Speedier Than Outer Shell
Earth's inner core is a solid iron ball slightly smaller than the moon. Little is known about it, but geophysicists confirmed this year that it spins--faster than the solid layers of earth surrounding it.

Geophysicist Xiaodong Song of the University of