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Physics Electric and Magnetic Fields
Physics Electric and Magnetic Fields
HS PS3-5
HS PS3-5
Biology
LS2-1 Factors Affecting Ecosystems
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LS1 3 Maintaining Homeostasis
Project Zero THINKING ROUTINES
Phenomenon
Alligator in winter Wonder of Science
Why is this an example of homeostasis? Where does homeostasis come into the alligator’s dormancy/hibernation (called brumation)?
Prior Knowledge/Preview
Introduction to Homeostasis RSC
Homeostasis and negative/positive feedback Amoeba Sisters
HS-LS1-3. Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.
[Clarification Statement: Examples of investigations could include heart rate response to exercise, stomate response to moisture and temperature, and root development in response to water levels.] [Assessment Boundary: Assessment does not include the cellular processes involved in the feedback mechanism.]
Aerospace CONNECTIONS:
Applications and examples
Homeostasis in Space NASA
Fluid shift in Space-going to Mars NASA
Effects of Long-term Space Flight Smithsonian Learning Lab
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Inquiry science
On-line activity
Human Homeostasis activity--go to Student Exploration Sheet Gizmo & Explore Learning
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LAB activities follow safety guidelines linked above and in the activity
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Lab #1 Diffusion, Osmosis & Active Transport Activity Concord SAM
Lab #2 Homestasis simulation WIS
Lab #2 Homeostasis Activity HHMI
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EXTENSION material for the curious
All about plant roots Lumen Learning
A detailed look at effects of spaceflight on body systems National Research Council
Activity Investigating Diffusion Cornell Institute of Biology Teachers
Activity Stomate activity Biology
Look closely-and slowly-at one of the homeostasis images below. Use your eyes to "zoom in" on each of the components-negative and/or positive feedback to maintain homeostasis. What controls homeostasis in the system you are looking at?
Look at a second system-is the factor controlling homeostasis the same-or the same type of-chemical?
THINKING ROUTINES--Slow looking
Thirst response
Flowchart of Thirst Response
Wikimedia Commons
OpenStax College CC 3.0
Birthing feedback loop
Positive feedback loop birth
Wikimedia Commons
OpenStax College CC 4.0 International
Feedback loop with calcium
Wikimedia Commons
M Häggström PD
Maintaining blood pressure and volume
Negative feedback loop with decreased blood pressure and volume
Wikimedia Commons
OpenStax College CC 3.0
Maintaining glucocorticoids
Negative feedback loop with glucocorticoids
Wikimedia Commons
OpenStax College CC 3.0
Sodium ion feedback loop
Sodium homeostasis feedback loop
WIS CC NC SA 4.0
Maintining pH homeostasis
Acid-base homeostasis
Wikimedia Commons
OpenStax College CC 3.0
Maintaining pH homeostasis
Homeostasis temperature regulation showing negative feedback mechanism
Wikimedia Commons
ChancroVet CC0
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