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Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
Cow To Whale Slides
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Cow To Whale Slides

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Third grade science lesson.

Third grade science lesson.

Published in: Technology, Education
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  • Transcript

    • 1. Cow to Whale Yola Sasson 3 rd Grade Science Westwood Elementary School May 21 st 2009
    • 2. This is a whale This is a cow How did a cow turn into a whale?
    • 3. Whales closest relatives are cows
      • Whales are thought to have evolved from a group of land animals that are classified as even toed ungulates which are commonly known as cows
      • In order for the whales to be able to live in the ocean rather than on land they had to evolve and adapt to that environment
    • 4. Adaptations that whales have to survive in the ocean
      • Be able to swim
      • Be able to live in cold water
      • Be able to hold their breath
      • Obtain food from the ocean (there is no grass in the ocean)
    • 5. Swimming Adaptations
      • Fusiform or football shape
        • The most efficient shape for moving through water
      • Tail flukes for swimming
      • Pectoral fins for steering
      • Dorsal fin that helps them stay upright
    • 6. Blubber an adaptation to live in cold water
      • Blubber is fat
      • Fat is insulation
      • Fat is also a food source
    • 7. Holding their breath under water
      • A whales nose is on top of its head and is called the blow hole
      • Whales can hold their breath for two hours
      • Whales do not store air in their lungs but in their blood and muscles
    • 8. Toothed whales and Baleen whales
      • Toothed whales eat fish or squid and use echo location to locate prey
        • A group of toothed whales working together to catch prey is called a pod
      • Baleen whales have rows of hairy plates which strain out plankton from huge mouth fulls of water
    • 9. Adaptations that whales needed to move from life on land to life in the ocean
      • How did they adapt from walking on land to swimming in the ocean
      • How do they keep warm
      • What happened to their nose
      • How did they adapt from eating plants to eating plankton or fish
    • 10.
      • THE END

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