Pg. 68 – Make a grid for the 6 vocabulary on pg. 69
& draw a simple drawing for each (like a logo)
Nocturnal
Diurnal
(Example)
Crepuscular
Hibernation
Migration
Estivation
EQ: How do ectotherms &
endotherms maintain
homeostasis (a stable internal
temperature)?
Pg. 71
Cornell notes
Not all information needs to be copied.
Copy only definitions & information that you judge to be important.
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)
Homeostasis
• The bodily process of maintaining a stable (constant) internal
environment
Examples:
Humans keep a count of about 70 trillion cells in their body.
Homeostasis
• The bodily process of maintaining a stable (constant) internal
environment
Examples:
Humans keep an average internal temperature of about 98.6 degrees
Fahrenheit.
Ectotherms
• “Cold-blooded” animals; have a wide range of body temperatures;
rely on external sources of heat
Endotherms
• “Warm-blooded” animals; have a narrow range of body
temperatures; maintain their body temperature from the inside
Watch the video about these ectotherms &
endotherms
Ectotherms
Endotherms
Black-throated monitor
Rhinoceros
River otter
Turtles
White-tailed deer
American alligator
Birds
Atala butterfly
Video on next slide
How do the otters stay warm? How do the turtles
warm up? How does the deer cool down? How
does the alligator cool down?
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 make
Turtles = basking/laying in the sun with limbs stretched out
Deer = moving warm blood through its large ears
Alligator = laying in the shade while blood runs through its scutes;
laying in the shade and opening its mouth
Ectotherms VS Endotherms
• Ectotherms use the outside temperature to warm up or cool down.
• Endotherms keep their bodies warm from the inside.
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.
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.
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Sun bittern
Vulterine guinea fowl
Yellow-billed stork
Cownosed ray
Kirk’s dik-dik
Agouti
Andean condor
Red ruffed lemur
Pemba fruit bat
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Reticulated giraffe
Giant anteater
Golden eagle
Watusi cattle
Desert pupfish
California Kingsnake
Pacu
Lion
Andean condor
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Mandrill
Mountain lion
Spotted necked otter
Black-necked stilt
Arabian oryx
Gerenuk
Crested screamer
Common eland
Desert tortoise