Transcript evolution
The Theory of EVOLUTION What is Science? “a way of knowing about the natural world based on observation and experiments that can be confirmed or disproved by other scientists using accepted scientific techniques.” True or False All scientists follow the same method for solving a problem. Theory “a well substantiated explanation of some aspect of the natural world that includes many confirmed observations, laws, and successfully verified hypotheses.” Student Activity Isn’t Evolution Just a Theory? click here Take video notes Student Activity How does the scientific meaning of a term like theory differ from the way it is used in everyday life? Explain your answer Evolution is when What is evolution? “population of species ____________________” How long did it take to CHANGE? Who was Charles Darwin? click here Student Activity Write down at least 10-15 facts about Darwin and his discoveries from the video clip. Check your video facts… He loved nature (Naturalist) Sailed around the world in ____________ Collected fossils and specimens of plants and animals especially around the ____________ _____________________________. Developed a theory called _____________ to explain how evolution occurred. Published: ___________________ Before Darwin’s theory of Natural Selection… ___________________ (1774-1829) proposed a hypothesis for how organisms change over generation. This mechanism was known as “_______________ ___________________.” True or False A woman who gets a tattoo can pass on the tattoo to her unborn child. What is natural selection? The process where individuals that have physical or behavioral traits (genes) that _________________their environment are more likely to ___________ and will ________________ more successfully than those that do not have such traits. Identify what each of the finches eats for dinner… WHY? Examine the physical characteristics of the birds shown above. Which of the birds is least likely to survive by eating plants or animals that live in shallow water? F. mallard duck G. common snipe H. red-tailed hawk J. great blue heron Adaptation A feature that has become __________ in a ___________ because it provides a _________ ___________ and is produced by natural selection. Which species will do best? Why? Cartoon Project Left Side IAN Using your ruler, draw a 10cm x 10cm box and draw a cartoon as to what type of food this bird would eat. * write a paragraph explaining why or how the cartoon shows the concept of natural selection underneath the cartoon drawing. Example of Adaptation and Natural Selection click here Take video notes Quick Write Activity 1. What is sickle cell? 2. How is malaria transmitted? 3. Explain how sickle cell is passed on from parent to offspring. 4. How is this mutation an example of natural selection by adaptation? Overview of Darwin’s Theory of Evolution Variation exists within the genes of every population or species. In a particular environment, some individuals of a population or species are BETTER suited to survive. Over time, traits with advantages tend to spread in that population. Living species today have evolved from organisms that are extinct. How fast does Evolution occur? Two hypotheses ___________- gradual change of species occur at a slow and constant rate over a long period of time. __________________species occurs in periods of rapid change separated by periods of little to no change at all.