pg. 68 – make a grid for the 6 vocabulary on pg. 69 & draw a simple drawing for each (like a...
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Pg. 68 – Make a grid for the 6 vocabulary on pg. 69 & draw a simple drawing for each (like a logo)
Nocturnal
(Example)
Diurnal
Crepuscular Hibernation
Migration Estivation
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EQ: How do ectotherms & endotherms maintain
homeostasis (a stable internal temperature)?
Pg. 71Cornell notes
Not all information needs to be copied. Copy only definitions & information that you judge to be important.
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Homeostasis
• The bodily process of maintaining a stable (constant) internal environment
Examples:Humans keep a body pH of 7.4 (a little less acidic than water)
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Homeostasis
• The bodily process of maintaining a stable (constant) internal environment
Examples:Humans keep a count of about 70 trillion cells in their body.
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Homeostasis
• The bodily process of maintaining a stable (constant) internal environment
Examples:Humans keep an average internal temperature of about 98.6 degrees Fahrenheit.
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Ectotherms
• “Cold-blooded” animals; have a wide range of body temperatures; rely on external sources of heat
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Endotherms
• “Warm-blooded” animals; have a narrow range of body temperatures; maintain their body temperature from the inside
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Watch the video about these ectotherms & endotherms
Video on next slide
Ectotherms Endotherms
Black-throated monitor Rhinoceros
River otter Turtles
White-tailed deer American alligator
Birds Atala butterfly
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How do the otters stay warm? How do the turtles warm up? How does the deer cool down? How does the alligator cool down?
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How do the otters stay warm? How do the turtles warm up? How does the deer cool down? How does the alligator cool down?
Otters = covered in thick fur to hold the heat they makeTurtles = basking/laying in the sun with limbs stretched outDeer = moving warm blood through its large earsAlligator = laying in the shade while blood runs through its scutes; laying in the shade and opening its mouth
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Ectotherms VS Endotherms
• Ectotherms use the outside temperature to warm up or cool down.
• Endotherms keep their bodies warm from the inside.
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If the outside temperature is 10, 20, 30, or 40 degrees Celsius, the bobcat’s body temperature is still the same.The snake’s body temperature depends on the outside temperature.
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Pg. 70 – Make a T-chart for ectotherms & endotherms. Then, look up these animals that the Phoenix Zoo needs better Animal Fact Sheets for. Sort the animals into the 2 groups. If you find an animal you are really interested in, you can call dibs on it by telling Ms. Beaith.
• Sun bittern• Vulterine guinea fowl• Yellow-billed stork• Cownosed ray• Kirk’s dik-dik• Agouti• Andean condor• Red ruffed lemur• Pemba fruit bat
• Reticulated giraffe• Giant anteater• Golden eagle• Watusi cattle• Desert pupfish• California Kingsnake• Pacu• Lion• Andean condor
• Mandrill• Mountain lion• Spotted necked otter• Black-necked stilt• Arabian oryx• Gerenuk• Crested screamer• Common eland• Desert tortoise