Plate tectonics is a scientific theory that describes the large-scale motions of Earth’s lithosphere. The model builds on the concepts of continental drift‚ developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were developed in the late 1950s and early 1960s. The lithosphere is broken up into tectonic plates. On Earth‚ there are seven or eight major plates and many minor plates. Where plates meet‚ their
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PLANET EARTH A Term Paper Presented to Ms. Lenie Jabagat Department of English In Partial Fulfillment of the Requirement for English III By Jim Paul Sencil January 30‚ 2013 PLANET EARTH Jim Paul C. Sencil Himamaylan National High School January 30‚ 2013 INTRODUCTION: Earth is the planet on which we live. Earth is the third planet from the sun. The particles which compose of the mass of the earth but more particularly the particles which from the mould on the surface
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95 percent of ocean-dwelling species. It was during the late Triassic period that the mammal-like reptiles evolved into the first mammals. During the Triassic period‚ all of the earth’s continents were joined together into a vast landmass called Pangaea. There were as yet no polar ice caps‚ and the climate was hot and dry‚ punctuated by violent monsoons. Except for insects‚ the skies of the early Triassic period were relatively quiet. The Triassic period wasn’t nearly as lush and green as the
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Lecture 1: Introduction Geology - the study of the Earth‚ the processes that shape it‚ and the resources that could be obtained from it. Main branches Physical Geology - deals with the materials that comprise the Earth and the processes that affect it (e.g.‚ Volcanology‚ Seismology‚ Environmental Geology‚ Engineering Geology‚ Mining Geology‚ Petroleum Geology‚ Mineralogy‚ Petrology‚ Geomorphology‚ Geophysics‚ Geochemistry‚ Planetary Geology) Historical Geology - the study of the origin and
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Study Guide 1 Geol 105 Spring 2012 Terms and People to know Amino acids –compound of life- proteins. Archaea – best candidate for earliest life. Live in extreme environments. BIF –Banded Iron Formation Mistaken Point- New foundland. Marine environments. Branching structure. fractal body plan Uniformitarianism- The theory that all geologic phenomena may be explained as the result of existing forces having operated uniformly from the origin of the earth to the present time.the laws of nature
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GSCI Final Exam Study Guide Glaciers q 1-24 34% Text book p 570-587 Ice as a Rock - Mass of crystalline grains of the mineral ice - Like sedimentary: formed from material in deposited layers‚ can accumulate a great Thickness - Igneous: formed by the freezing of a fluid - Metamorphic: transformed by recrystallization under pressure - Flows readily downhill like a viscous fluid because of structural weakness - Glaciers: large masses of ice on land that show evidence of
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Biology Unit 4 Chapter 1: “Terrible Lizards” Paleontologist: someone who studies “ancient organisms” Paleobiology – the study of ancient life Paleontology is particularly important with regard to scientific theory‚ since for many children dinosaurs are the first exposure to scientific concepts Early Dino Stuff In 1676- large meat- eating femur (Megalosaurus) was discovered and people thought it was a giant human’s scrotum – “Scrotum humanum” First scientific name given to dinosaur Prior to 1800s
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Oceanography Test 1 Study Guide Chapter 1: Knowing the Ocean World An Ocean World • Ocean creatures provide 2% of humanity’s food • 1/3 of the world’s petroleum and natural gas are pumped from beneath the ocean floor • ~ 71% world is covered by water • Ocean – vast body of saline water that occupies the depressions of the earth’s surface • 97% of the water on or near the earth’s surface is contained in the ocean; less than 3% is held in land ice‚ groundwater‚ and freshwater
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65 million years ago)We are most interested in this era. This era contained 3 periods: Triassic period‚ Jurassic period‚ Cretaceous period. Triassic period – 245 million years ago: All the continents were joined together in one huge landmass‚ aka Pangaea. Climate was hot and dry but with rain seasons. The first tree ferns and coniferous trees were starting to appear. The first dinosaurs such as Euskelosaurus and Coelophosis‚ and mammals‚ turtles‚ crocodiles and frogs appeared. Jurassic period – (208
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MINERALS 5 CHARACTERISTICS OF A MINERAL: 1)Naturally Occuring; 2) Be a colid; 3) Have an orderly crystalline structure; 4) have a definite chemical composition; 5) generally be inorganic Which are not classified as Minierals & Why: Gold‚ Water‚ Synthetic Diamonds‚ Ice & Wood: Gold-YES – naturally occurring; Synthetic Diamond: NO – Manmade; Water: NO – liquid state‚ only a solid material can be considered a mineral – in it’s naturally occurring ice state it is a solid and therefore a mineral;
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