1. Answer this question
When you hear the word “evolution”, what do you think of?
Is evolution something you agree or disagree with? Why?

2. The Puzzle of Life’s Diversity
15-1

3. Darwin and the Beagle
Charles Darwin was a naturalist on the HMS Beagle.
The Beagle was a British ship that circumnavigated the globe.

4. Living Organisms & Fossils
Darwin noticed that some of the fossils he collected look similar to still living organisms.
Others looked nothing like he had ever seen.

5. The Galápagos Islands
Archipelago composed of numerous islands with different climates.
Animals and plants
of the islands
differed from those
of other islands.

6. Galápagos Turtles
Darwin noticed that the turtles of the different islands all differed in neck length and shell shape.

7. Darwin’s Finches
Darwin observed and collected many different birds found on the islands.
Each island had birds with differing beaks, allowing the birds to have different diets.

8. Assignment 1
Evolution Web Quest

9. Ideas That Shaped Darwin's Thinking
15-2

10. Hutton’s Geological Change
Hutton proposed that geological processes shaped the Earth.
Plate shifting can cause valleys and mountains to form. Rain, cold, and heat can break rocks and move earth.

11. Lyell’s Principles of Geology
Lyell stressed that scientists must explain the past by processes seen today.
Earthquakes can create mountains and valleys, and erosion can create canyons.
For these changes to occur, the Earth had to be extremely old.

12. Lamarck’s Evolution
Proposed evolution through use and disuse of organs.
Always evolve towards perfection and complexity.
Offspring
acquire traits.

13. Malthus & Economics More babies are being born than people are dying.
If not kept in check, there will not be enough food or living space for humans.