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- 1. Multiple Choice
Loops that cause a response to build up and build up until something big happens are called ____________ loops
positive
negative
- 2. Multiple Choice
The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.
positive
negative
- 3. Multiple Choice
Most of the body's feedback loops are ____________ loops.
positive
negative
- 4. Multiple Choice
Body temperature regulation is an example of a ______________ loop
positive
negative
- 5. Multiple ChoiceIf the environment gets cold, we will often shiver in order to:keep body temperature the same as the external temperaturedecrease body temperatureincrease body temperatureregulate blood pressure
- 6. Multiple ChoiceNegative Feedback Loops:amplify processesprevent small changes from getting largerare initiated during childbirthare found only in plants
- 7. Multiple ChoiceMaintaining body temperature is an example of a:negative feedback looppositive feedback loop
- 8. Multiple Choice
In a positive feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
- 9. Multiple Choice
In a negative feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
- 10. Multiple Choice
A ________________ feedback loop makes a system more stable.
Positive
Neutral
Negative
Circular
- 11. Multiple Choice
A _________________ feedback loop moves a system to an extreme.
Positive
Neutral
Circular
Negative
- 12. Multiple Choice
A thermostat in a central heating system can determine the temperature of your living room. It switches the air conditioner on when the temperature increases to a predetermined level and shuts it off when it cools to another level. The room temperature remains within a comfortable level regardless of the temperature outside.
Positive Feedback Loop
Negative Feedback Loop
- 13. Multiple Choice
In an economic recession, job loss leads to decreased spending, which harms businesses and leads to even more job loss.
Positive
Negative
- 14. Multiple Choice
When the population of deer in an area begin to grow, they start overgrazing the vegetation that feeds them. When there is not enough vegetation to sustain the rapidly growing deer population, they will begin to die off until the vegetation grows back to normal levels and the deer will have enough food to repopulate again.
Positive
Negative
- 15. Multiple Choice
This image is an example of
Equilibrium
Negative
Positive
Temperture
- 16. Multiple Choice
A organization posts an advertisement with a very "click-baity" title and image on a social media platform. The title and image draw in people to click on the ad. As the ad receives more views, the algorithm shows the ad to more people.
Positive Feedback Loop
Negative Feedback Loop
- 17. Multiple Choice
In some developing countries poverty causes illness and contributes to poor standards of education. In the absence of knowledge of family planning methods and hygiene, this contributes to population growth and illness, adding further to the causes of poverty; “a vicious circle of poverty.”
Positive Feedback Loop
Negative Feedback Loop
- 18. Multiple Choice
Does the graph show positive or negative feedback?
Positive, because when the red line shifts, the blue one does also
Negative, because the blue line starts below equilibrium
Negative, because the two actions are keeping each other near equilibrium
Both positive and negative because the graph moves up and down
- 19. Multiple Choice
Negative feedback loops result in stabilization of a system.
Negative feedback is a process that _______ the effects of a change.
reduces
amplifies
has no effect
- 20. Multiple Choice
Positive feedback loops result in a system moving towards an extreme. Positive feedback is a process that _______ the effects of a change.
reduces
amplifies
has no effect
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