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Endothermic and Ectothermic Animals Standard 6.3.3

Endothermic and Ectothermic Animals Standard 6.3.3. Link. Why do some animals pant or sweat?. Essential Question. What are the characteristics of warm and cold-blooded animals? Magic School Bus. Define.

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Endothermic and Ectothermic Animals Standard 6.3.3

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  1. Endothermic and Ectothermic AnimalsStandard 6.3.3

  2. Link • Why do some animals pant or sweat?

  3. Essential Question • What are the characteristics of warm and cold-blooded animals? Magic School Bus

  4. Define • Endothermic: warm-blooded; describes animals that maintain a nearly constant internal temperature and do not change with the temperature of the environment. • Ectothermic: cold-blooded; describes animals which have an internal body temperature that changes with the temperature of the environment.

  5. Characteristics of endothermic animals • Animals including birds and mammals. • When the outside temperature is too hot, an endothermic animal can cool off by sweating, panting, changing position, or changing location. Sweating and panting generate heat loss through evaporating water. Changing position and location allow the animal to find a cooler environment in the shade or shelter.

  6. Endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature. For example, a lion must eat its weight in food every seven to ten days.

  7. How often do you have to eat?Why?

  8. Characteristics of ectothermic animals • Animals including fish, amphibians, and reptiles. • If the temperature gets too hot, ectothermic animals will need to find a cooler temperature or burrow in the ground to keep cool.

  9. If the environment is cold, ectothermic animals become slow moving and sluggish. Some animals must bask in the Sun (for example snakes or lizards) or move to a warmer area (for example some fish) before they can move about to hunt for food.

  10. They must gain heat to perform internal activities (for example digestion). • If an animal is cold blooded, they take on the temperature of their surroundings so they don't have to use food energy to keep warm. This means they don't have to eat as often.

  11. Summary What are the characteristics of warm and cold- blooded animals?

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