PPT-The Rock & Fossil Record

Chapter 3 Our World in One Minute http wwwyoutubecomwatchvZSt9tm3RoUU Section 1 Earths Story and Those Who First Listened The Principle of Uniformitarianism For 30 years a Scottish farmer and scientist named . layer of soil is made of clay and minerals and contains less humus (soil profile). 2. . _____. the oldest rock layer located (Earth’s story). 3.. _____. process moves sediment (erosion). 4. . _____ the number of years a fossil or rock layer has existed (absolute age). Fossil are the preserved remains or traces of living things.. They form when living things die and are buried by sediment.. They are usually found in _______________ rock. 1. . Petrified fossils: . formed by replacement.. What are fossils?. FOSSILS. . are. . the . preserved remains or . traces.  of animals, plants, and other organisms . that lived long ago.. When an organism dies, hard parts of the animal (bones, teeth, shells, etc.) can be preserved in rock.. Remains . of once living organisms.. Form from decay and are buried by sediment.. Sediment hardens into rock and preserves the shape of the organisms.. Fossils. Fossils . Remains. Molds. . Casts. . Biogeography | Homologies. Learning Objectives. Describe . how . biogeography . and homology provide evidence for evolution. Distinguish . between anatomical, molecular, and developmental homologies. What we will learn about Fossils?. We will learn how fossils form?. What types of fossils exist?. How do scientists determine the age of fossils?. What do fossils reveal to scientists?. What is a fossil?. Fossils. Fossils provide a window into the past as they provide evidence about the changes that have occurred to the Earth over the 4.5 billion years of existence.. A . fossil . is the preserved evidence in rocs or soils of organisms that once existed on Earth.. & Adaptive Radiation. Ju Whan Kim, Jacob Finnegan,. Richard Kerfoot & Charmaine Chan. BIOL 1510 Module 1. Group B-26 . Introduction. Stratigraphy. The Fossil Record. Adaptive Radiation. Images obtained from: http://www.micropress.org/stratigraphy/graphics/vol1.jpg, . Irreducible complexity of cells. Creationists argue that there is no catalyst or driving force to cause evolution, that the law of entropy means things become more disordered on their own. Biochemist Michael Behe popularized the concept of . Aim: How do we correlate rocks? . Geologists try to match similar rock strata in different locations to see if they formed at the same time. This process is called. Correlation. Lets learn about correlation. . Fossils are the . preserved remains . or traces of . living. things. Most fossils form when . living. things die and are buried by . sediments. . The . sediments. slowly harden into . rock. Fossils have helped determine approximately when life first appeared, when plants and animals arrived on land, and when organisms became extinct.. CONDITIONS NEEDED FOR FOSSIL FORMATION. Whether or not a dead organism becomes a fossil depends upon how well it is protected from scavengers and agents of physical destruction, such as waves and currents.. Happy . Winds-day . Pooh!. Today:. Patterns in the Fossil Record – . . R. eview . fossil . formation. Changes in the type and distribution of fossil species. Similarities between fossils. Body Structures and Patterns (in fossils). Section 12.1 Discovering earth’s history. Uniformitarianism – the idea that physical, chemical, and biological laws that operate today also operated in the past; the present is the key to the past..