set up cornell notes on pg. 23 topic: 10.2 darwin’s observations essential question: 1. (bottom...

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  • Set up Cornell Notes on pg. 23

    Topic: 10.2 Darwins Observations

    Essential Question:(bottom half of p.22) Make a double-bubble map comparing and contrasting variation and adaptation (give examples of each)2.1 Atoms, Ions, and Molecules10.2 Darwins Observations(bottom half of p.22) Make a double-bubble map comparing and contrasting variation and adaptation (give examples of each)KEY CONCEPT:Darwins voyage provided insight on evolution.

  • 10.2 Darwins ObservationsKEY CONCEPT Darwins voyage provided insight on evolution.

  • 10.2 Darwins ObservationsCharles DarwinEducated in Natural History

    Hired on the HMS Beagle as the ships naturalist

    He collected many organisms

    He formulated the idea that each species had developed from ancestors with similar features

  • 10.2 Darwins ObservationsThe Voyage of the BeagleIn 1831 The HMS Beagle set sail The voyage took 5 yearsHe read Lyells Principles of GeologyDarwin spent most of his time on shore observing species, where he found much evidence supporting Lyells views

  • 10.2 Darwins ObservationsBIRD BEAK BUFFET

  • 10.2 Darwins ObservationsFollow the rules!On the top half of page 22, create the table that you see on your directions. (Leave room to answer a short question underneath).

    Choose a beak (each table must have at least one of each) and have a stomach (cup)Pour out the first food source into the pie tin.When I say go you will have 10 seconds to eat as much as you can (pick up and put in your stomach)Record your dataRepeat for all three foods.

  • 10.2 Darwins ObservationsVariation- is the difference in the physical traits of an individual from those of other individuals in the group to which it belongsDarwin noticed the variation of traits among similar species that he observed in his travels

  • 10.2 Darwins ObservationsInterspecific variationVariation among different speciesIntraspecific variation Variation among the same species

  • 10.2 Darwins ObservationsDuring Darwins journey he noticed that the differences among the species seemed well suited to the animals environment and dietThese observations led Darwin to realize that species may somehow be able to adapt to their surroundings

  • 10.2 Darwins ObservationsAn adaptation is a feature that allows an organism to better survive in its environment.Species are able to adapt to their environment.Adaptations can lead to genetic change in a population.

  • 10.2 Darwins ObservationsWhat adaptations do these animals have? Why do they need those adaptations?CamelCheetahGiraffeMountain Goat

  • 10.2 Darwins ObservationsCompare these two tortoises. Note their looks and think about what type of food they would be able to eat.

  • 10.2 Darwins ObservationsDarwin observed differences among island species. Domed tortoises live in wet areas rich in mosses and short plantshave shorter necks and legsSaddle-back tortoises that live in areas with tall plants have long necks and legs

  • Grizzly BearPolar BearKiller WhaleBlue Whalevs.vs.Interspecific variation: is variation among individuals of different speciesInterspecific Variation

  • 10.2 Darwins ObservationsDarwin found fossils of extinct animals that resemble modern animals.GlyptodonArmadilloDarwin observed fossil and geologic evidence supporting an ancient Earth.

  • 10.2 Darwins ObservationsHe saw land move from underwater to above sea level Supported the theory that small daily geologic activity can lead to great changes over timeDarwin extended his observations to the evolution of organisms. Darwin observed an EarthquakeDarwin found fossil shells high up in the Andes mountains.