spots‚ less than one kilometer in others. Underneath it is the mantle‚ a layer of rock some 2700 kilometers thick that accounts for the bulk of the Earth. The crust is primarily made of granite and basalt while the mantle beneath is made of peridotite. More about all that below. How We Know the Earth Has a Crust Just a century ago‚ we didn’t know the Earth has a crust. Until the 1900s all we knew was that our planet wobbles in relation to the sky as if it had a large‚ dense core. Astronomical observations
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Heaven on Earth Everyone has that special place where they can go to escape all the pressures and worries of life‚ that wonderful spot where you can go to soothe all your complications and stress. Imagine for a moment what that place is for you. A place that makes you feel complete and captivated. For me‚ the beach is that ultimate place that is unlike any other I have ever experienced. While I am there all my obligations are immediately erased. The moment I step onto the satiny‚ warm sand and
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The structure of the earth The earth has three major parts-the land part or lithosphere‚ the water part or hydrosphere and the air part or atmostpere. The lithosphere is the surface on which you live . It is also the earth solid sphere consisting mainly of massive rocks. The massive rocks form large land masses called continent and small island groups . Different land form such as mountains‚hills‚valleys‚plateaus and plains make up the lithosphere. The hydrosphere include all water forms
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in plants. Chlorophyll is the basis of photosynthesis that allows plants to turn the sun’s energy into life energy. Human action destroys plants and replaces healthy ecosystems with concrete and asphalt. Another slogan that emerged was "save planet earth." Humans will not save the planet. The task for humans is to stop destroying the environments that sustain us. If we fail‚ the planet will do just fine without
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changes contribute a lot to human life as we know it. There should be a balance in order for most living things to survive. A stable environment is the key to survival. Through-out many years‚ things Earths systems have been changing drastically. The outcomes of change can be good or bad. The Earth is warming faster than ever before‚ and humans are to blame. Ever since the industrial revolution‚ (which began during the mid-1800s) humans had affected the Earth’s atmosphere drastically. We have quickly
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Earth Science is an all-embracing term for the sciences related to the planet Earth. It is arguably a special case in planetary science‚ the Earth being the only known life-bearing planet. There are both reductionist and holistic approaches to Earth sciences. The formal discipline of Earth sciences may include the study of the atmosphere‚ hydrosphere‚ oceans and biosphere‚ as well as the solid earth. Typically‚ Earth scientists will use tools from physics‚ chemistry‚ biology‚ chronology and mathematics
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PLANET OUR HOME” God create our planet earth for us to have a home so we have to take care of our planet because God gave it to us and if we don’t take care of our planet someday our planet earth will be destroy or it will be gone. We have to protect our nature specially the trees because if we don’t protect our nature and if we cut down all the trees we will experience stronger floods and typhoon that will destroy our planet. We can save our planet earth by simply throwing your garbage in the right
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AGE OF THE EARTH Scientists have settled on the age of the earth of about 4.6 billion years as a result of research started almost 50 years ago. This conclusion was based upon carefully designed and conducted experiments that compared the ratios in rock samples of parent elements to daughter elements ( some of which would have been from radioactive decay of the parent‚ some of which may have been present in the sample at the time of formation). Since radioactive decay is known to occur at a constant
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Dynamic Earth Has the Earth been static since the beginning of time? Well‚ Earth hasn’t been moving vigorously but it is changing at a steady rate. New geological features‚ rock formations‚ and locations of plates all rise and demolish some in a lifetime and others over a span of millions of years. Earth is dynamic; it constantly progresses and doesn’t rest. Through the churns and molds‚ the twists and turns‚ Earth is active because of plate tectonics and the rock cycle. The ideas
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Earth Sciences History‚ 2013‚ 32:1‚ front cover. First geological map of the Province of Moscow by Fischer von Waldheim (1830-1837) _________ Membership in the History of the Earth Sciences Society (HESS) offers opportunities to interact and exchange ideas with others interested in the history of the geosciences‚ whether scientists or historians‚ and a subscription to Earth Sciences History (ESH)‚ the international journal for the history of the geosciences. Current and lapsed HESS members:
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