There are many different layers within the Earth. The core is at center of the Earth. The Earth’s core takes up sixteen percent of Earth’s volume‚ containing thirty-three percent of its Mass ..Pressure rises steadily inside the earth because of the weight of overlying rock. Therefore ‚the Pressure at the outer boundary of the core reaches 1.37 million atmospheres‚ 3.7 million Atmospheres. The core is made mostly of iron and nickel and possibly smaller amounts of lighter elements including sulfur
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The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation‚ warming the surface through heat retention (greenhouse effect)‚ and reducing temperature extremes between day and night (the diurnal temperature variation).The common name given to the atmospheric gases used in breathing and photosynthesis is air. Dry air contains roughly (by volume) 78.09% nitrogen‚ 20.95% oxygen
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Narayanan “SAVE OUR TIGERS” It’s true that starting from the Indian cricket team captain Dhoni to the famous South Indian actor Surya‚ popular persons have appeared on the television screens-not for a movie or an advertisement this time but to raise the voice for a very significant concern. “Only 1411 tigers left in India...save our tigers” A tiger on the whole is not just an untamed animal with enigmatic fur or an icon of fierceness. The elimination of tigers from the environment can have a very
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Unit 5 |1. |Rising air expands and cools; sinking air is compressed and warms. Typically‚ the size of the temperature change is: | | |A. | | |5oF/1000 ft change in elevation going up‚ and 3oF/1000 ft coming down | | |
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Origin of Earth and Evoluation of the Environment MODULE - 1 Environment through Ages 1 ORIGIN OF EARTH AND EVOLUTION OF THE ENVIRONMENT We live on a beautiful planet called earth‚ along with a wide variety of plants‚ animals and other organisms. Our earth‚ however‚ is part of a vast universe. The universe is about 15 to 20 billion years old. The age of the earth is approximately 4 to 5 billion years‚ while human beings evolved only around 2 million years ago. In this lesson‚ you shall learn
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EARTH As far as science knows the planet earth is unique in the entire universe. Certainly this is true in our own solar system. Earth is far better suited for life than any other planet‚ yet even here most of the environments are too hot‚ too cold‚ too far underground or too far above ground to support much life. In the many thousands of miles of changing environments from the center of the earth to the edge of its atmosphere‚ there are only a few meters of habitable environment for most life forms
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lowest possible resistance. But as we discussed before‚ poor soil conditions can be overcome with more elaborate grounding systems. The soil composition‚ moisture content‚ and temperature all impact the soil resistivity. Soil is rarely homogenous and the resistivity of the soil will vary geographically and at different soil depths. Moisture content changes seasonally‚ varies according to the nature of the sub layers of earth‚ and the depth of the permanent water table. Since soil and water are generally
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Evolution of the Earth The planet earth has gone through much abuse and punishment in the past. Formed approximately 4.5 billion years ago‚ the earth has undergone multiple catastrophic asteroids erasing species after species. Due to geologic evidence‚ it is estimated over 90 percent of all life that had ever lived in this planet have been extinct. No more than the past 500 million years alone‚ 50-90 percent of all organisms on earth were wiped out of the geological timeline without any warning
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I Can’t Imagine I Aced It “Okay everyone‚ settle down so we could start the test.” Mrs. Nair said‚ and I carefully followed her instructions‚ appearing like a student fully prepared for the test. Wait‚ of course I just look prepared on the outside but if you would dissect me like a frog and try to experiment on “The Anatomy of Jovelle Salamanca” you would find out that the exact moment I entered the classroom‚ my blood pressure must have been so high because my heart was pounding so quickly. I am
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the first and upper most layer of the Earth. There is Continental Crust which sits on top of Oceanic Crust. This layer is made frequently from granite rocks and is solid. Continental Crust is approximately 32km. Below the Continental Crust is Oceanic Crust. It is about 8km. This part of the Crust is made from basalt rocks. The Crust is most of lithosphere and is the coolest layer by far. Mantle is like silly putty consistency. It is the largest layer of Earth sitting under the Crust. It is made
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