I consider the impact that layout and presentation will have and can combine lettering. Dynamo action the conversion from kinetic to magnetic energy works so efficiently in a. Select the pdf file you want to convert to powerpoint. Energy measurements and conversion iowa state university. Deciphering the planets history and processes could improve the ability to predict catastrophes like earthquakes and volcanoes, to manage earth s resources, and. Darwins theory, modern synthesis theory of evolution, geological time scale.
Therefore, it is reasonable to assume that both water and rare gases were at the earths surface virtually at the time of formation of the earth. Gravity takes over, and as this nebula contracts, it begins to rotate ppt. Although it is the most studied planet, it cannot be completely understood in isolation. Download the ppt file and save it to your computer. Our pdf to powerpoint converter will turn your pdf into ppt in seconds. Early theories origin of earth nebular hypothesis 1796. The first 4 billion years of earth s history, from its formation to the first appearance of shelly fossils 545 million years ago, is known as the precambrian see figure 1. It includes not only the surface process which have shaped the earths surface, but the study of the ocean floors, and the interior of the earth. Chapter 10origin of the elements 102 the nuclear reactions that formed 4he from neutrons and protons were radiative capture reactions. A core to the gas cloud as well as a spinning disc of dust and gas are created because of the gravitational force. How does the disk become star, planets, etc in particular, which part becomes earth.
The planets where formed out of a cloud of material associated with a youthful sun, which was slowly rotating. Origin of sexual reproduction evolutionary biology. Geologic history of earth, evolution of the continents, oceans, atmosphere, and biosphere. Convert your pdfs to powerpoint presentations free and easy to use. Most of the mass is at the center of the disk, which becomes the sun. Ascension coordinate, and the right ascension of an astronomical object is measured eastward from that point in hours, minutes, and seconds of time. Finally, the iron in the center accumulated as the core. Lecture 5 origin of the solar system origin of the moon ppt ation mu researcher develops origin of life origin of the universe earth and life origin of the universe earth and life ppt origin of the earth s atmosphere powerpoint ationppt origin of the earth powerpoint ationppt origin of life on earth characteristics early. Theories of the origin of life, early earth, modern self assembly theories, oparinhaldane theory of chemical evolution of life. I can use the common units of measure, convert between related units of the metric system and carry out.
Remaining uploaded pdf or ppt files will be deleted automatically. Questions about the origins and nature of earth have long preoccupied human thought and the scientific endeavor. Introduction and origin of the earth geology, what is it. Origin and evolution of earth national academies press. The center of a bodyfixed frame is the center of the body. During that time, simple, marinedwelling, softbodied organisms dominated life. Earth, along with the other planets, is believed to have been born 4. Free neutrons and protons fused to deuterium d or 2h with the excess energy emitted as a 2. Origin and evolution of earth research questions for a changing planet questions about the origins and nature of earth have long preoccupied human thought and the scientific endeavor.
Origin and evolution of earth the national academies press. The history of earth concerns the development of planet earth from its formation to the present. That is, the efficiency or the ratio of mechanical power out divided by electrical power in will be less than one. Any heat flow generated by inevitable real world loss mechanisms like friction and resistance will lead to unrecoverable. Atmospheric composition and climate on the early earth pdf. The origin of the earths magnetic field is a longstanding issue. Sources of water water reached earth by one of two processes. The center of any inertial frame is always the solar system barycenter. No watermarks just converting pdf to ppt in seconds. Around it, a thin but fairly stable crust of solid rock formed as earth cooled. The chemistry of meteorites and sun provide constraints on the composition of the bulk of the earth.
Depressions in the crust were natural basins in which water, rising from the interior of the planet through volcanoes and fissures, collected to form the oceans. While the origin of the coordinate system can be taken to be the center of the earth, it might also be taken to be the center of the sun. It is not only the study of the earth as we see it today, but the history of the earth as it has evolved to. The origin and the evolution of the earth authorstream. The layers of rock at earths surface contain evidence of the evolutionary. This slide describes various theories about origin of the earth, like nebular theory, big. Research in 2003 reported that montmorillonite could also accelerate the conversion of fatty acids into bubbles, and that the bubbles could encapsulate rna.
979 136 1340 518 985 502 279 521 1210 300 254 750 146 1270 146 278 1677 1672 760 1256 299 371 1097 954 1524 507 787 1125 1372 148 65 220 1371 386 1207 1032 268 1050 977 856 1057 217 975 1310 421