Xem 1-20 trên 41 kết quả Water planet
  • (BQ) Ebook Earth science: Water Cycle and Weather presents about why can’t you drink salt water? How do scientists classify clouds? How do scientists classify clouds? does each tool measure? Water is recycled through the water cycle; cause and Effect what causes a cold front? What effects does a cold front have on weather?.

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  • The same amount of water has been present on our planet for about 4 billion years, since shortly after the Earth was formed. Since then it has cycled through evaporation, condensation, precipitation and surface runoff multiple times. Water scarcity as an abiotic factor ranging from moderate to severe stress levels, accompanied by loss of moisture in the soil, is extremely hard for most organisms to cope with, particularly terrestrial plants and their food-chain dependents.

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  • Water is one of the basic elements for life. It is even assumed that the evolution of life is only possible if there is liquid water present. A water molecule has some remarkable properties that make it quite unique in the universe. In the first chapter of this book we will review these basic properties of water and the role of water on Earth. All ancient civilizations realized the importance of water and their cities were constructed near great reservoirs of water.

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  • Who isn’t made blissful sitting at water’s edge, staring at the horizon, hypnotized by that delicate, nearly imperceptible yet somehow distinct line where blue meets blue? Who among us doesn’t count those solitary, sun-washed moments—whether afloat on a boat or feet dug deep into the sand—as among the favorites of a lifetime? Cliché? Perhaps.

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  • The question of the origin of water on Earth, or the question of why there is clearly more water on the Earth than on the other planets of the Solar System, has not been clarified. There are several acknowledged theories as to how the world's oceans were formed over the past 4.6 billion years.

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  • The planet is a marvelous place with its blue skies, wild storms, deep lakes, and rich and diverse ecosystems. The tides ebb and flow, baby animals are born in the spring, and tropical rain forests harbor an astonishing array of life. The Earth sustains living things and provides humans with the resources they need to maintain a bountiful way of life. These resources include water, soil, and nutrients to grow food, and the mineral and energy resources to build and fuel modern society, among many other things....

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  • A / Aims and objectives : By the end of the lesson , Ss will be able to speak with a friend about things which might be on Mars such as : water , little creatures , minerals ….. B / Teaching aids : Textbook . pictures and posters about Mars and its position in the solar system. C / Procedure : 7 min I / Warm up : Guessing game - Work in group Tell Ss to work in group of three to four and make good guesses about Mars . Questions 1, What do you think might be on the mars ?...

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  • There is an estimated 1.4 billion km3 of water in the world but only approximately three percent (39 million km³) of it is available as fresh water. Moreover, most of this fresh water is found as ice in the arctic regions, deep groundwater or atmospheric water. Since water is the source of life and essential for all life on the planet, the use of this resource is a highly important issue. 'Water management' is the general term used to describe all the activities that manage the optimum use of the world’s water resources....

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  • LIFE ON EARTH ULTIMATELY DEPENDS ON ENERGY derived from the sun. Photosynthesis is the only process of biological importance that can harvest this energy. In addition, a large fraction of the planet’s energy resources results from photosynthetic activity in either recent or ancient times (fossil fuels). This chapter introduces the basic physical principles that underlie photosynthetic energy storage and the current understanding of the structure and function of the photosynthetic apparatus (Blankenship 2002). The term photosynthesis means literally “synthesis using light.

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  • When seen from space, “Planet Earth” is a mix of clouds, with the majority (two thirds) of the total surface under ocean water with the remaining third of land forming what we call continents, with various degrees of increasing albedo from open water bodies, vegetation, bare soil, rocks, deserts, and snow/ice packs. In a very short time (relative to Earth's age), the modern human civilization has conquered its neighboring space with probes, satellites, and vehicles carrying humans for exploration.

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  • T he Earth has been blessed with an abundant supply of natural resources. Natural resources are those elements that exist on the planet for the use and benefit of all living things. Scientists commonly divide them down into distinct groups for the purposes of studying them. These groups include agricultural resources, plants, animals, energy sources, landscapes, forests, minerals, and water and atmospheric resources.

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  • “Earth is a unique planet, possibly one of the few in the galaxy that has water. Nearly 71% of it’s surface is ocean. From space, Earth is brilliantly blue, white in places with clouds and ice, sometimes swirling with storms. At it’s surface the ocean is in constant motion with powerful currents that stretch for thousands of miles and towering waves. Beneath the ocean’s surface lie hidden mountain ranges, vast trenches tens of thousands of feet deep, immense hot springs, and huge volcanoes spewing molten rock in massive eruptions.”...

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  • But the same processes that have produced these gains have given rise to trends that the planet and its people cannot long bear. These have traditionally been divided into failures of 'development' and failures in the management of our human environment. On the development side, in terms of absolute numbers there are more hungry people in the world than ever before, and their numbers are increasing. So are the numbers who cannot read or write, the numbers without safe water or safe and sound homes, and the numbers short of woodfuel with which to cook and warm themselves.

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  • Where did the water in the Oceans come from? Outgassing (H2O, CO2) of the Earth from volcanoes, early in its history, but continuing today Sedimentary rocks as old as 3.8 billion years!A much smaller amount from comets that pass by.Weak electrical attraction makes for “sticky” molecules This explains its unique properties: heat capacity surface tension dissolving power

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  • Many critical survival issues are related to uneven development, poverty, and population growth. They all place unprecedented pressures on the planet's lands, waters, forests, and other natural resources, not least in the developing countries. The downward spiral of poverty and environmental degradation is a waste of opportunities and of resources. In particular, it is a waste of human resources. These links between poverty, inequality, and environmental degradation formed a major theme in our analysis and recommendations.

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  • Talk of heat—or better not—on Xecho. This water-logged world combined all the most unattractive features of a steam bath and one could only dream of coolness, greenness—more land than a stingy string of islands. The young man on the promontory above the crash of the waves wore the winged cap of a spaceman with the insignia of a cargo-master and not much else, save a pair of very short shorts. He wiped one hand absently across his bare chest and brought it away damp as he studied, through protective sun goggles, the treacherous promise of the bright sea.

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  • The ode was original a ceremonial poem written to celebrate public occasions or exalted subjects.  Knowledge of the rate at which a ship is traveling through the water is important if the  navigator  need to estimate the time of arrival. The earth is the only planet with a large number of oxygen in its atmosphere.  Robert Frost was not well known as a poet until he reached the forties. 

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  • 1. The ode was original a ceremonial poem written to celebrate public occasions or exalted subjects. A B C D 2. Knowledge of the rate at which a ship is traveling through the water is important if the navigator A B C need to estimate the time of arrival. D 3. The earth is the only planet with a large number of oxygen in its atmosphere. A B C D 4. Robert Frost was not well known as a poet until he reached the forties.

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  • Feng Shui means the Wind and Water. When wind and water combines, they form energy which the Chinese refers to as "Qi". Every living things on the planet Earth is affected by it. For example, 70% of our body is water. Imagine, if the water you drink does not have good "Qi", you will get ill easily. Our body also needs air, the oxygen. If you don't breathe for 10 minutes, you will die. Therefore the study of Feng Shui is the study of how the "Qi" affects us.

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  • Many have endeavored to make our outdoor environment cleaner and safer. The learning process that occurred showed us the limitations of our planet and also the sustainability of our ecosystem if given a chance. As a community, we learned about the water, the soil, and the air. We learned about the underground river that flowed to the surface lake. We learned about air currents that transported airstreams around our globe. We discovered the reality of plate tectonics and the ever-changing hydrogeological system.

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