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Fossils Paleontologists- study fossils Fossil Record evidence for hist. of life and how species have changed over time Extinct- some species have died out
Fossils Fossils Form buried in rock (sand/silt/clay) hardens around organism preserves an imprint of specimin
dating Relative dating age of a fossil is compared to other fossils in other layers of rocks Index fossils easily recognized organism that only existed for a short period of time
dating Radioactive dating C-14 dating fossils younger than 60,000 years Potassium-40 dating fossils billions of years old
Time Geological Time represents evolutionary time line of earth Time is divided into eras Eras is divided into periods
Chapter 17: The History of Life Calif. Science standards 8e
17-1 The Fossil Record. A fossil is defined as any evidence of life that existed long ago. A fossil can be a plant, an animal, a footprint, an egg, a.
The Fossil Record.
Evolution- Change in life forms over time
Slide 1 of 40 The Fossil Record. Slide 2 of 40 Fossils and Ancient Life What are fossils? What are fossils? Preserved remains of ancient organisms Preserved.
Copyright Pearson Prentice Hall
Outine 17-1: The Fossil Record
The Fossil Record Chapter 17.1.
Though we cant be certain, scientists have suggested that the earth was very hot due to volcanoes and meteorites hitting the earth Sometime around 4.4.
Mr. Karns Biology Fossils.
The History of Life (Chapter 17) Please set up your notebook for Cornell Notes.
History of Life on Earth Evolutionary TIMELINE Ms. Herrera.
17-1: The Fossil Record Biology 2. Studying history of life is fascinating and challenging Scientists can study ancient rocks, sap from trees, bogs and.
The Fossil Record Section 17–1
CHAPTER 14 NOTES HOW LIFE BEGAN? Inorganic (nonliving) matter was transformed into simple organic molecules Miller-Urey experiment (they modeled the.
Foothill High School Science Department The History of Life The Fossil Record.
Fossils. What are fossils? Fossils - the preserved remains or traces of animals, plants, and other organisms that lived long ago. When an organism dies,
Chapter 19: The History Of Life Ridgewood High School
How do scientists know evolution has occurred?. Paleontologists: scientists who study fossils Geologists: scientists who study rock layers.
Direct Evidence Indirect Evidence
Chapter 17: History of Life.
8.3 Radioactive Dating.
End Show Slide 1 of The Fossil Record. End Show 17-1 The Fossil Record Slide 2 of 40 Fossils and Ancient Life What is the fossil record?
Chapter Paleontologists- scientists who collect and study fossils 2. Fossil Record- evidence about the history of life on Earth & shows how.
Aging the Earth. a. Using the Fossil Record b. Using the Law of Superposition c. Using Relative Dating d. Using Absolute Dating through Radioactive Decay.
A. The age of the earth is 4.5 billion years old. b. Geological history of the earth is divided into eras, periods, and epochs. c. Fossil record provides.
Chapter 17-1: The Fossil Record Essential Questions: What is the fossil record? What is the fossil record? What is the difference between relative dating.
Evidence of Evolution. 1) Fossil Record 2) Geographical Distribution 3) Homologous Body Structures 4) Similarities in Embryology.
A. Direct Evidence B. Indirect Evidence. Visible evidence that organisms have changed over time Ex. – Fossils.
Freshman Honors Biology. Studied by paleontologists Remains of past dead organisms Forms in sedimentary rock Include Eggs Whole skeletons.
A trip through geologic time Chapter 10 page 310
Bellringer 11/21/13 What is a fossil?.
The History of Life. Early Earth Was Inhospitable Very Hot. Radioactive or subject to Radiation. Volcanoes Atmosphere very little oxygen, lots of H 2.
What Era and Period did it come from?. Describes timing and relationships between events that have occurred during the history of the Earth Divided into.
HISTORY OF EVOLUTIONARY THOUGHT. Unit Objective #1 I CAN COMMUNICATE SCIENTIFIC INFORMATION THAT COMMON ANCESTRY AND BIOLOGICAL EVOLUTION ARE SUPPORTED.
5-2 The Fossil Record
Geologic Time How can geologists date rocks?. ROCKROCK DATINGDATING.
Index Fossils and Geologic Time. Dating Fossils 1. Scientists use two methods to date fossils: absolute dating & relative dating 2. Scientists use radiometric.
$1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.
Geologic Time and Relative Dating. Review Geologic Time: begins when the Earth began 4.6 billion years ago Includes: Precambrian Time (4.6 billion years.
Chapter 3 Section 4 Looking at Fossils.
Geologic Time Scale & Fossils Notes Part 1. Rock Types & Fossils There are 3 types of rock: – Igneous, Sedimentary, and Metamorphic – Sedimentary rocks.
Chapter 17 Section 1 paleontologists- scientists who study fossils -they infer what past life forms were like -arrange fossils according to time in which.
Notes on Fossils (from top left) are of a ammonite (marine); T-Rex; an ancient fish and a trilobite (marine). Earth/Space.
How do we know the age of the Earth?
BEGININGS. Introduction ■Earth formed 4.6 billion years ago, and life first appeared about 4 billion years ago. ■The first life forms were microscopic,
Freshman Biology. Evolution of Macromolecules Unicellular organisms Eukaryotic cells Multicellular organisms Endosymbiotic theory- eukaryotic.
Notes 7-2 and 8-2 Evidence and fossils. Evidence of evolution Similar body structures Patterns of early development Molecular structure Fossils.
Do Now 8/19/11 How does the existence of homo-sapiens (100,000 years ago) compare to the length of the earth? How does the impact humans have had on the.
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