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Darwin's Theory of Evolution Through Natural Selection

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Darwin's Theory of Evolution Through Natural Selection THE EVOLUTION OF LIFE NOTEBOOK Darwin’s Theory of Evolution Through Natural Selection OBSERVING PHENOMENA Phenomenon: Darwin found many kinds of finches with different sized and shaped beaks on the different islands of the Galápagos. 1. What questions do you have about this phenomenon? 1 - Darwin’s Voyage on the Beagle 1. What did Darwin see in South America that surprised him? 2. What was Lyell’s argument about Earth’s land features and what did it cause Darwin to question about the mountains? © Teachers’ Curriculum Institute Darwin’s Theory of Evolution Through Natural Selection 1 NOTEBOOK 2 - Darwin Visits the Galápagos Islands 1. What did many the species of animals in the Galapagos island resemble? 2. What is a trait? Give one example of a trait. 2 Darwin’s Theory of Evolution Through Natural Selection © Teachers’ Curriculum Institute NOTEBOOK INVESTIGATION 1 1. Which tool is a model for which bird’s beak? Match them below. Tools A. toothpick B. tweezers C. nail clippers D. pliers Tool Finch Large ground finch Vegetarian finch Cactus finch Woodpecker finch 2. Keep track of how many of each bird there are after each round. Station 1 Finch Before Round 1 After Round 1 After Round 2 Large ground finch 1 Vegetarian finch 1 Cactus finch 1 Woodpecker finch 1 Station 2 Finch Before Round 1 After Round 1 After Round 2 Large ground finch 1 Vegetarian finch 1 Cactus finch 1 Woodpecker finch 1 © Teachers’ Curriculum Institute Darwin’s Theory of Evolution Through Natural Selection 3 NOTEBOOK Station 3 Finch Before Round 1 After Round 1 After Round 2 Large ground finch 1 Vegetarian finch 1 Cactus finch 1 Woodpecker finch 1 Station 4 Finch Before Round 1 After Round 1 After Round 2 Large ground finch 1 Vegetarian finch 1 Cactus finch 1 Woodpecker finch 1 3. Darwin hypothesized that there was one population of ancestor finches that had arrived to the Galápagos Islands from South America. This population took over the different islands. Based on what you have learned so far in this unit, construct an explanation for why Darwin might have come up with this hypothesis. 4 Darwin’s Theory of Evolution Through Natural Selection © Teachers’ Curriculum Institute NOTEBOOK 3 - Darwin Develops a Theory 1. How did Lamarck believe that living things changed over time? 2. How did Lyell’s ideas influence Darwin’s ideas on how living things changed over time? 3. What was Malthus’s idea? How did it influence Darwin’s thoughts on living things? 4 - Darwin’s Idea of Natural Selection 1. Why would a collection of apples you take home with you be more red and crunchy on average than the average redness and crunchiness of the apples at the store? 2. Are all individuals in a population of animals or a population of plants identical? 3. What is the variation in these birds’ traits? © Teachers’ Curriculum Institute Darwin’s Theory of Evolution Through Natural Selection 5 NOTEBOOK 4. How does natural selection change the traits of living things over long periods of time? 5. What does the word evolution mean? 6. If birds with long and thin beaks are better at getting food in a specific environment than birds with short and thick beaks, what do you expect the population will look like after 50 generations? 7. What is an adaptation? 6 Darwin’s Theory of Evolution Through Natural Selection © Teachers’ Curriculum Institute NOTEBOOK INVESTIGATION 2 1. What is some of the variety in the spoon mouthparts? How are they the same? How are they different? 2. How many marbles did you collect in 10 seconds? 3. Which mouthpieces were the most successful? Do you think the results would be the same if you were “eating” something small and squishy? 4. If the animals with the most successful food capturing capabilities were to have an offspring, what would it look like? Do you predict that the offspring would be good or bad at collecting food? Why? © Teachers’ Curriculum Institute Darwin’s Theory of Evolution Through Natural Selection 7 NOTEBOOK 5 - Darwin Publishes His Work 1. Why didn’t Darwin want to publish his work right away? 2. Is Darwin’s theory widely accepted by scientists today? MAKING SENSE OF PHENOMENA Phenomenon: Darwin found many kinds of finches with different sized and shaped beaks on the different islands of the Galápagos. 1. Use what you have learned to explain this phenomenon. 8 Darwin’s Theory of Evolution Through Natural Selection © Teachers’ Curriculum Institute.
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