9. evolution theories
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DESCRIPTION9. Evolution Theories. Essential Question: How does the evidence of geology, fossils, and comparative anatomy support the theory of evolution? Learning Target: I can describe who Charles Darwin was and his inference about life on earth. - PowerPoint PPT Presentation
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9.Evolution Theories Essential Question: How does the evidence of geology, fossils, and comparative anatomy support the theory of evolution?Learning Target: I can describe who Charles Darwin was and his inference about life on earth. Learning Task: I will watch short film clips to learn about Charles Darwin and the inferences he made about life on Earth. I will read about two different theories about how evolution occurred.
Welcome! Warm Up Thursday 4/10/14 Week of 4/7 4/11What is Pangaea?What does it mean to believe in something? Record your response at www.goo.gl/vta7d1
Fair WarningWhen we return from Spring Break, I will not accept late work without a penalty.
Penalty: Late work will receive a MAXIMUM grade of 70.
Work will not be accepted more than one week late after each progress report.4th Quarter Table of Contents 1
TitleAssignment #Ice Cores2Ice Core Webquest3Fossil Notes4Getting into the Fossil Record 5Fossil Vocab6Fossils over Time (Molds vs Casts) 7Law of Superposition Vocab 8Whos on First? (Wkst)9Geologic Time VOCAB 10Video: Evolution Questions11Evolution Vocab12
Belief vs. UnderstandingOur beliefs are important to us. They are valid and serve valuable purposes in our lifeScience isnt about telling you what to believe or about telling you that what you believe is wrong. Rather, Science is about UNDERSTANDING the world around us. You dont have to believe it, but you should understand it.
Video: Evolution Evolving IdeasToday we will watch two video clips from the PBS Series Evolution Evolving Ideas You will copy the questions for each section into your lab notebook before watching, and then answer the questions while you watch.Video: Evolution Questions11Segment 1: Isn't Evolution Just a Theory?What is a theory? 2. What does Darwin's theory of natural selection aim to explain?3. What is an inference?4. What was Darwin's inference?
Segment 1: Isn't Evolution Just a Theory?Full screen/youtube:http://www.youtube.com/watch?v=85diEXbJBIkOriginal PBS location:http://www.pbs.org/wgbh/evolution/library/11/2/e_s_1.html
Segment 1: Isn't Evolution Just a Theory?1. What is a theory? Examples:
2. What does Darwin's theory of natural selection aim to explain?Pulls together observations, laws, hypothesis, and inferences into logical explanationsgravitational theory, cell theory, germ theoryHow new species originate/the diversity of life on earth
Segment 1: Isn't Evolution Just a Theory?3. What is an inference?
4. What was Darwin's inference?
A conclusion drawn from available evidence
All living things come from a common ancestor
Segment 3: How do we know evolution happens?1. Where is the history of life held? 2. How are whales similar to us? How are they different?3. Whales have flippers, but what are the bones similar to on the inside?4. What reason do scientists give for a four-legged animal moving closer to water and giving rise to modern whales?
Segment 3: How do we know evolution happens?Full screen/youtube:http://www.youtube.com/watch?v=ewtw_nZUIDQOriginal PBS location:http://www.pbs.org/wgbh/evolution/library/11/2/e_s_3.html
Segment 3: How do we know evolution happens?1. Where is the history of life held?
2. How are whales similar to us? How are they different?Layers of fossils/The fossil record
Similar: mammals, intelligent, nurse their young, warm-blooded
Different: swim like fish, live in water
Segment 3: How do we know evolution happens?3. Whales have flippers, but what are the bones similar to on the inside?
4. What reason do scientists give for a four-legged animal moving closer to water and giving rise to modern whales?
Similar to bones in monkey arms, frog legs, and birds wings
Abundant food sources, escape from competition
Most Species that have lived on Earth are now Extinct!Extinction of species is common. Extinction of species occurs when the environment changes and the individual organisms of that species do not have the traits necessary to survive and reproduce in the changed environment.Extinct: The Dodo BirdThe Dodo was a large, flightless birdIt was a relative of pigeons and dovesThe last dodo died sometime in the late 17th century
Extinct: The DinosaursStegosaurus lived way before Triceratops showed upTyrannosaurus wasn't feasting on Apatosaurus (he had been extinct for millions of years by that time)They were all gone by the time human beings came around
Extinct: Passenger PigeonThese pigeons once blackened the sky as they roamed in flocks numbering in the billions Westward-bound settlers chopped down the birds' habitat at an alarming pace.In less than 100 years, this species was in a lot of trouble.The last passenger pigeon died in a Cincinnati zoo in 1914.
Extinct: Saber-Toothed TigerHas been extinct for over 10,000 yearsThe cat itself was about the size of a modern-day lion (if not a bit shorter), but far more robust This fierce predator once roamed freely in the grasslands and forests of North and South AmericaWe should probably be happy we're not living in the Ice Age!
http://en.wikipedia.org/wiki/File:Smilodon_Skeleton.jpgIn your Lab Notebook: Evolution Vocab12Darwin a naturalist who proposed and provided scientific evidence that all species of life have evolved over time from common ancestorsNatural Selection survival of the fittest organisms that are the best adapted to their environment and will live long enough to reproduce and pass on those adaptations
Theory a explanation that ties together many hypothesis and observationsCreate Frayer Models for the wordsCompeting theoriesInheritance of Acquired Characteristics vs. Natural SelectionFind this assignment in your Stoffregen Science Assignments on the Google DriveRead, Annotate, and Answer the questionsExit Ticket What theory of evolution was proposed by Charles Darwin?