PPT-CHAPTER 25 THE HISTORY OF LIFE ON EARTH

1 Artists Conception of Earth 3 billion years ago 2 3 I Concept 251 The Origin of Life A Introduction 1 Conditions at this time on Earth were such that life could have arisen by . By: Rachel Carson. Presented By: Rachael Albright and Amanda Wess. About the Author. Born in 1907, died in 1964. Graduated from Pennsylvania College for Women in 1929 but received her MA in zoology from John Hopkins University in 1932.. Brian O. ’. Meara. EEB464 Fall . 2015. Tucson Botanical Gardens. Learning outcomes:. Get a deep perspective on time. Understand major events in earth history. Generate hypotheses regarding what happens after mass extinctions. Formation of the Solar System. Formation of the Solar System. Scientists claim that 4.5 billion years ago there was just a featureless cloud of . gas..mostly. hydrogen and some helium with a little carbon and iron. Chemical conditions of the early Earth. . A model for the first cells. First life. Life changes the planet: oxygenating Earth’s oceans and atmosphere. Eukaryotic cells descended from prokaryotic cells. NS3310 - Physical Science Studies. Geologic Time. Relative Time. Law of Superposition. Uniformitarianism. Unconformities. Absolute Time. Radiometric Datine. Earth History. Hopscotch Through Geologic Time. Who was James Hutton?. In the late 1700s, James Hutton began to question some of the ideas regarding the Earth.. He found fossils and saw them as evidence of life forms that no longer exist. . Different types of fossilized creatures were found in different layers of rock.. Organization of . Ch. 21-24. Ch. 21.1 – Describes the geologic time scale. Ch. 22 – Precambrian Earth. . Section 1: Early Earth. . Section 2: Formation of the Crust and Continents. . Section 3: Formation of the Atmosphere and Oceans. Geological Time Scale. AIM: . How have stratigraphy and radiometric dating been used to construct the geological time scale?. The History of Earth. Earth’s history has been studied through 2 methods:. Lecture 3. Development of. Geological Concepts, Part I. Major Concepts. In the 17. th. and 18. th. centuries (Age of Reason), application of the scientific method of observation and interpretation began with the purpose of understanding earth processes in the context of the biblical account, but wound up challenging and discrediting that explanation. . How does the atmosphere support life?. The atmosphere allows us to breathe. Many different types of organisms need oxygen to perform life processes. Plants require carbon dioxide to undergo photosynthesis. . Conditions on early Earth made the Origin of Life possible.. Current theory about how life on Earth began.. Earth formed about 4.6 billion years ago.. Earth was too hot and still being bombarded by meteors, any water evaporated.. Eras of Earth’s History EQ: What causes changes in the Earth? How does knowing the past give us a VISION for the future? Precambrian Time Eon Precambrian Time Eon 4.6 billion years ago-545 million years ago How does worldview affect how people think about the history of life?. The Evolution of Evolution. Biological evolution: the slow, gradual change in organisms from one kind to another. Species: groups of organisms that look the same and have the same structure. Erosion and Deposition. Vincent . Eblacas. Untalan. Middle School. SY 2017 to 2018. Earth Science Chapter 8 . Erosion and Deposition. What are the 3 major factors that changes the Earth’s Surface? (15 points).