1. Outline 15-1: The Voyage of the Beagle
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2. I. Charles Darwin A. Darwin’s Great Adventure
1. Went on 5 year voyage on the HMS Beagle (1831)
a. Collected specimens
b. Made many observations
c. Read latest books
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Darwin’s Voyage

4. 2. Darwin visited the Galapagos Islands
a. Noted similarities between plants and animals of the islands and the mainland of Ecuador 1000 km away.
b. Hypothesized that:
 ancestors of Galapagos species migrated there from South America and
 changed after they arrived
Ex: Galapagos finches & tortoises
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Location of Galapagos Islands mm

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Galapagos Islands mm

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8. mm Galapagos Tortoises Short neck: abundant food near ground
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Short neck: abundant food near ground
Long neck helps to reach food mm

9. Examples of Grassland animals: Elephants & giraffes in Africa
c. Darwin noted that animals & plants seemed remarkably well suited to their environments.
 He was puzzled by the different animals that inhabited similar environments in different parts of the world
Examples of Grassland animals:
Elephants & giraffes in Africa
Bison in North America
Kangaroos in Australia
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10. Grassland Animals of World
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11. d. Darwin also collected fossils.
 Some fossils resembled organisms that were still alive Ex: Extinct Glyptodon resembles living armadillos
 Others looked completely unlike any creature he had ever seen
Ex: dinosaur fossils
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12. Size of a large football
Extinct Glyptodon
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Size of a VW Beetle car
Armadillo mm
Size of a large football