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Internal structure

The interior of the Earth, like that of the other terrestrial planets, is chemically divided into layers. The Earth has an outer silicate solid crut, a highly viscous mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core. The crust is separated from the mantle by the Mohorovicic discontinuity, and the thickness of the crust varies: averaging 6 km under the oceans and 30–50 km on the continentsThe geologic component layers of the Earth[33] are at the following depths below the surface,... to be continued.....

Ozone tips protection

The detailed mechanism by which the polar ozone holes form is different from that for the mid-latitude thinning, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and bromine. The main source of these halogen atoms in the stratosphere is photodissocition of chlorofluorocarbon (CFC) compounds, commonly called freons, and of bromofluorocarbon compounds known as halons. These compounds are transported into the stratosphere after being emitted at the surface. Both ozone depletion mechanisms strengthened as emissions of CFCs and halons increased.

Ozone Tips

Ozone depletion describes two distinct, but related observations: a slow, steady decline of about 4 percent per decade in the total amount of ozone in Earth's stratosphere since around 1980; and a much larger, but seasonal, decrease in stratospheric ozone over Earth's polar regions during the same period. The latter phenomenon is commonly referred to as the ozone hole.

Info how to protect The Earth Environment

Tips how to protect The Earth Environment

Example : Air Pollution Control?

This includes catridge dust collectors, bag filters, HEPA filters, electronic air cleaners,activated carbon media for gaseous contaminants and commercial air cleaners for coolant mist, weldingfume, grinding dust, mold, pollen, allergens, tobacco smoke, and much more!

Earth

Welcome to my blog. In this blog, you'll learn about earth and guideline how to protect our earth as your friend.

Earth is the only planet whose English name does not derive from Greek/Roman mythology. The name derives from Old English and Germanic. There are, of course, hundreds of other names for the planet in other language.It was not until the time of Copernicus (the sixteenth century) that it was understood that the Earth is just another planet.

Earth, of course, can be studied without the aid of spacecraft. Nevertheless it was not until the twentieth century that we had maps of the entire planet. Pictures of the planet taken from space are of considerable importance; for example, they are an enormous help in weather prediction and especially in tracking and predicting hurricanes. And they are extraordinarily beautiful.

The Earth is divided into several layers which have distinct chemical and seismic properties (depths in km):

0- 40 Crust40- 400 Upper mantle400- 650 Transition region650-2700 Lower mantle2700-2890 D'' layer2890-5150 Outer core5150-6378 Inner core