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

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.

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

Video on next slide

Ectotherms Endotherms

Black-throated monitor Rhinoceros

River otter Turtles

White-tailed deer American alligator

Birds Atala butterfly

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 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

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.

• 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