Through the process of outgassing, the outpouring of gases from the earth s interior, many other gases were injected into the atmosphere. Nance encyclopedia of life support systems eolss on that basis makes some predictions for the future. Nearly all branches of natural science have contributed to understanding of the main events of earths past, characterized by constant geological change and biological evolution the geological time scale gts, as defined by international convention, depicts the large spans of time from the. Geologic time scale and brief history of life on earth. Ppt the geologic time scale powerpoint presentation. This page uses frames, but your browser doesnt support them. The known geological history of earth since the precambrian time is subdivided into three eras, each of which includes a number of periods. The geologic time scale is a system used by scientists to describe earth s history in terms of major geological or paleontological events such as the formation of a new rock layer or the appearance or demise of certain lifeforms. Department of energy, na tional aeronautics and space administration, national science foundation, and u. Geologic time paleozoic erameans ancient life 544 245 million years ago commonly called the age of trilobites organisms were well adapted for sea life with. Recognizable humans emerged at most 2 million years ago, a vanishingly small period on the geological scale. Geologic history is the history of earth and its geologic processes. Nov 06, 2017 earth creationism geological lecture ppt carol lee lab ppt geologic time deciphering earth unit5 internalprocesses plo e s april30 theories of geological evolution ppt how do geologic processes change the shape of earth sppt geologic time earth is 4 65 ga old powerpoint ationppt geologic time deciphering earth and creating appt geologic and the evolution. Geologists have divided earths history into a series of time intervals.
India is famous for its varied geological features. Paper timeline today, you will create a scale timeline of earths history on a long sheet of adding machine paper scale. This is because geologic time is divided using significant events in. It divides earth s long history into units of time. Mar 18, 2015 this video discusses the major changes to the planet since its formation to the present day.
Geologists have done the same thing to geologic time by dividing the earths history into eras broad spans based on the general character of life that existed during these times, and periods shorter spans based partly on evidence of major disturbances of the earths crust. Aug 24, 20 cenozoic era, geologic history, earth science lesson powerpoint, rise of the mammals 1. Geologists use evidence in rock record to classify these. If so, share your ppt presentation slides online with. Collectively the first three eons are called the precambrian, that stretch of. Dust left over from the birth of the sun clumped together. These key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the geologic time scale. The enumeration of those geologic time units is based on stratigraphy, which is the correlation and classification of rock strata. Structure of the earth plate tectonics unit structure of the earth plate tectonics ppt. A geologic time scale powerpoint us version teaching. Earth science reference table your best friend in earth science.
The geologic time scale and a brief history of life on earth the geologic time scale is divided into four major units. The following posters have been developed as classroom resources and are free to download. Earth timeline a guide to earth s geological history and. Geologists and paleontologists measure the age of the earth and the history of life in millions and billions of years.
In its earliest stage of formation, it was uninhabitable as it clumped from a cloud of dust since about 1,000,000,000 years ago, earth had its first signs of life. Pages in category geological history of earth the following 35 pages are in this category, out of 35 total. Modern geologic time scales additionally often include the hadean eon, which is an informal interval that extends from about. Geologic history powerpoint notes linkedin slideshare. Geologic history of earth, evolution of the continents, oceans, atmosphere, and biosphere. Cenozoic era, geologic history, earth science lesson powerpoint, rise of the mammals 1. It subdivides all time into named units of abstract time calledin descending order of durationeons, eras, periods, epochs, and ages. Nov 06, 2017 these key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the geologic time scale. Geological history of earth ppt the earth images revimage.
Earth creationism geological lecture ppt carol lee lab ppt geologic time deciphering earth unit5 internalprocesses plo e s april30 theories of geological evolution ppt how do geologic processes change the shape of earth sppt geologic time earth is 4 65 ga old powerpoint ationppt geologic time deciphering earth and creating appt geologic and the evolution. In an epoch, a certain section may be especially well known because of rich fossil finds. These time intervals are not equal in length like the hours in a day. In an epoch, a certain section may be especially well known because of. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. The gaia theory use the data above to construct a graph of the changing percentage composition of earth s atmosphere since the formation of the earth. Assessment of world heritage fossil site nominations. Students who demonstrate understanding can develop a model to illustrate how earths internal and surface processes. Since about 1,000,000,000 years ago, earth had its first signs of life. The geological timescale above is a representation of time elapsed after the formation of earth, divided into slices, each differentiated by a geological event whose record is held in rock samples. Geologic time represented in a diagram called a geological clock, showing the relative lengths of the eons of earth s history and noting major events the geological history of earth follows the major events in earth s past based on the geological time scale, a system of chronological measurement based on the study of the planets rock layers. In its earliest stage of formation, it was uninhabitable as it clumped from a cloud of dust. Earths past has been organized into various units according to major geologic and life based events which took place.
The entire history of humankind is but a blink of an eye next to the vastness of geological time. Geologic time geologic time powerpoint ppt presentation free to view. Many of the changes in the past can be observed in the rock record. Geoscience for the future poster geoscience for the future. Geologic history of the earth 1 geologic history of the earth 2. The geologic time scale tracks the eras of earths history. In this series of games, your students will learn about earths geological history, the maps that scientists use to model it, and the evidence that helps them create those maps.
We do not inherit the earth from our ancestors, we borrow it from our children. Earth history timeline this activity has students create a timeline using 6 meters of cash register ticker tape. Mass movement weathering and erosion soils unit weathering mass movement soils ppt weathering online reading. These time units make up the geologic time scale record of the earths history. Geologic time 1 earth history geologic time 2 geologic time. Apr 15, 2020 geologic time, the extensive interval of time occupied by the geologic history of earth. Through the process of outgassing, the outpouring of gases from the earths interior, many other gases were injected into the atmosphere. A geologic time scale earth history powerpoint distance learning. The geologic time scale is a record of the major events and diversity of life forms present in earths history.
Deciphering the planets history and processes could improve the ability to predict catastrophes like earthquakes and volcanoes, to manage earths resources, and. Geological time or deep time dates earth at about 4. Earth s surface and geologic processes ppt xpowerpoint. Lesson 1 of 3 introducing geological time periods topic. These processes have remained essentially constant over the course of earth s history. Plate tectonics fosters biodiversity and steers the course of evolution and. Superposition fossil activity ppt law of superpositionfossils. Both about size of asian elephant thick coat and peaked forehead and hump and curved tusks. Geologic history of the earth is the property of its rightful owner. The geologic time scale began when earth was formed and goes on until the present. Click on the table at right to view the different ages of the earth. Every timeline template you ll ever need the 18 best.
American geosciences institute agi geoscience online learning initiative. Origin and evolution of earth national academies press. Origin and evolution of earth the national academies press. Lecture 23 geologic history and time lecture 24 mass wasting lecture 25 running water lecture 26 glaciers lecture 27 more glaciers. Choose your answers to the questions and click next to see the next set of questions. Lesson 2 of 3 on formation of the earth and geological time periods. Some processes create new materials, like rockforming processes and floods creating natural levees. They will lightly color the 4 eras, label important events, and tape or paste index fossils from the new york earth science reference tables. Ppt geologic history of the earth powerpoint presentation. Ppt geologic time earth is 4 65 ga old powerpoint ation ppt geologic and the evolution of life powerpoint ppt geological features of earth powerpoint ation id 758686 geological strata ation template for powerpoint and keynote ppt geology the study of structure earth powerpoint.
Includes slides on azoic, proterozoic, paleozoic, mesozoic, cenzoic, and neozoic eras. They will also consider the bedrock and glacial history of the area and weave a coherent story for the finding of the set of fossils. 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. Earth s past has been organized into various units according to major geologic and life based events which took place. The geologic time scale is the history of the earth broken down into four spans of time marked by various events, such as the emergence of certain species, their evolution, and their extinction, that help distinguish one era from another. In the very beginning of earths history, this planet was a giant, red hot, roiling, boiling sea of molten rock a magma ocean. Geologic timeline of earth quiz game powerpoint earth. History of life on earth ppt video online download. Examples of earths major events could range from being very recent such as the last ice age or the earliest fossils of homo sapiens to very old such as the formation of earth or the earliest evidence of life. Origin of life life s timeline 1 st life earth formed about. Each pair of students focuses on a different particular period of time e.
Why so little is known about precambrian time precambrian rocks have been deeply buried. Students discuss the formation of earth, watch a video compressing the planets history into a single year, and use handout attached separately to create their own earth calendar flow diagram. Slides cover from the origin of the planet to the rise of humans. Geologists have divided earth s history into a series of time intervals. The plate tectonics learning objective based on ngss and state standar. Deciphering the planets history and processes could improve the abil. The geological history of india began with the geographical transformation of other parts of the earth, to be precise, 4.
For example, the break up of a super continent or the formation of a new mountain range would be a geologic reason to begin or end an eon, period, or epoch. The geologic time scale is a record of the major events and diversity of life forms present in earth s history. History of life on earth timeline ppt global history blog. The geologic time scale we use to study the history of the earth and of it life. Nearly all branches of natural science have contributed to understanding of the main events of earth s past, characterized by constant geological change and biological evolution. Formal geologic time begins at the start of the archean eon 4. Convection in the outer core is essential for the magnetic field of the earth, which shields our tissues from radiation. History of life on earth timeline ppt written by desain rumah wednesday, december 26, 2018 add comment edit earth timeline a guide to earth s geological history and. They, in turn, are subdivided into epochs and stage ages.
You can skip questions if you would like and come back to them. Introduction to the geologic time chart video khan academy. In the very beginning of earth s history, this planet was a giant, red hot, roiling, boiling sea of molten rock a magma ocean. Geologic time is broken up into sections based on major changes in earth. The geologic time scale is a system used by scientists to describe earths history in terms of major geological or paleontological events such as the formation of a new rock layer or the appearance or demise of certain lifeforms. Structure of the earthplate tectonics unit structure of the earthplate tectonics ppt. Ppt geologic history of the earth powerpoint presentation free to view id. The time scale is then broken up into 3 major blocks of time called eras. This is because geologic time is divided using significant events in the history of the earth. With many geoscience programs now needing to quickly shift to online teaching, the american geosciences institute agi wants to make sure all faculty are aware of the 29 modules in the freetotake geoscience online learning initiative goli platform, which is a joint effort of agi, aipg, sepm, and asbog. The layers of rock at earths surface contain evidence of the evolutionary processes undergone by these components of the terrestrial environment during the times at which each layer was formed. The earth formed at about the same time as the other terrestrial planets in the inner part of the solar system as it cooled. Jul 23, 2017 lesson 1 of 3 introducing geological time periods topic.
Geological and paleoclimatic events 542 to 500 million years ago, the continents were separated by shallow, warm seas. The layers of rock at earths surface contain evidence of the. Cenozoic era, geologic history, earth science lesson. We explain how earth formed, where the moon came from, how the atmosphere changed over time, where the. Aug 29, 2019 the geologic time scale is the history of the earth broken down into four spans of time marked by various events, such as the emergence of certain species, their evolution, and their extinction, that help distinguish one era from another. The geologic time scale is the calendar for events in earth history. To understand evolution, humans must think in units of time much larger than those.
If youre seeing this message, it means were having trouble loading external resources on our website. Geological history outcrop activity ppt articles and worksheets law of superposition and index fossils geological history page 8 and 9 excellent info sequential event worksheet practice question practice worksheet geological time carbon 14 relative age dating relative dating of rock layers sequence of events and law of superposition how to. Includes slides on the various time periods on our planet earth. The history of earth concerns the development of planet earth from its formation to the present day. Cambrian and then shares their findings with the class.
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