PLANET EARTH - The Incredible Visual Guide Part 8 pps

... 0 98_ 099_WD207.indd 98 16/12/ 08 16:55:09 98 The last 80 0 million years have seen a spectacular diversication of life in all its forms. The single-celled organisms that dominated life for the ... 17:35:09 092_093_WD207.indd 93 5/12/ 08 14:32: 48 93 6 MARITIME In the temperate regions, weather systems move east from the oceans over the land. This means that the w...

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... between them. US_ 088 _ 089 _WD207.indd 89 9/1/09 17:26:19 082 _ 083 _WD207.indd 82 12/12/ 08 10:05:07 82 WAVES, CURRENTS, AND TIDES 1 SURFACE CURRENTS Oceanic winds tend to blow toward the west in the tropics, ... (0– 18 km) US_ 084 _ 085 _WD207.indd 84 9/1/09 17:26:10 088 _ 089 _WD207.indd 88 5/12/ 08 14:31:57 88 There are ten basic types of clouds. Their names are combinat...

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... 91 water table 67 water vapor 64, 65, 87 early atmosphere 17, 80 water cycle 19, 66 waves 47, 48, 82 83 weather 65, 86 87 extreme 90–91 weather forecasting 87 weathering 46–47, 60 wetlands 65, 104–105 whales ... Desert 110 Athens, Greece 120 atmosphere 11, 84 85 , 87 , 96 early 17, 19, 80 , 85 planets 10, 11 atmospheric pressure 84 , 86 atolls 102–103 atoms 64 Australia 21,...

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... conservation Glossary 124 Index 126 Acknowledgments 1 28 Oceans and seas 80 Waves, currents, 82 and tides Atmosphere 84 Weather 86 Clouds 88 Extreme weather 90 Climates 92 4 5 US_004_005_WD207_Prelims.indd ... eect Iron oxide in the rocks gives Mars its rust-red color Water droplets form white clouds in the atmosphere 6 7 8 9 5 US_010_011_WD207.indd 11 9/1/09 18: 00:24...

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... and rock in the region of the galaxy where the Sun was born. As the pieces of dust and rock orbited the star, they were pulled together by their own gravity, and the energy of these collisions ... sank toward the center of the planet to form its core. The rest formed the thick, hot mantle and the relatively thin, cool, brittle crust. EARLY EARTH  BOMBARDMENT While...

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... seconds. EARTHQU AKE CITY  The city of San Francisco lies at the northern end of the San Andreas Fault, and suers regular earth tremors. The last earthquake struck in 1 989 , destroying part of the ... Africa moving east away from the rest of the continent. This has allowed the central part of the valley—on the left of the picture—to sink into the Earth....

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... of the deep mantle beneath the crust, and therefore 80 percent of the planet. It is rare on the surface, occurring in places where major earth movements have squeezed it up from beneath the ... 17:11:39 046_047_WD207.indd 47 27/11/ 08 16:09:26 47  SAND-BLASTING In desert zones, where there are few plants to bind the soil together, the wind picks up sand grains and hurls...

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... frequently they snap due to tension pulling the rocks apart. One side of the fault drops relative to the other—or is pushed up by pressure—and the rock strata become oset. By matching the layers, ... dentist’s drills. When the bones are exposed, they are preserved, often with a varnish, to stop them falling apart. Scientists can then work out how they once t together. 2 1...

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... 6 GLACIAL REBOUND The colossal weight of the ice-age ice sheets distorted Earth s crust downward. In the 12,000 years since they melted, the crust has been steadily rising at the rate of up ... GLACIER In the polar regions, southeastern Alaska and southern New Zealand, glaciers ow all the way to the coast and out to sea. Here, the oating snout of the Hubbard Gla...

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... 17: 38: 15 1 08_ 109_WD207.indd 1 08 16/12/ 08 17: 08: 16 1 08 In regions that are too dry for forests, but not quite dry enough to be described as deserts, the natural vegetation is grass. Other ... intercept all the rain carried on prevailing winds. In South America, the Andes strip the moisture from winds blowing o the Pacic, and the lands in the “rain shadow”...

Ngày tải lên: 05/08/2014, 22:22