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- 1. Multiple Choice
A process in which an event acts as both an input and output of the same system is called a(n)
Earth system.
feedback loop.
photosynthesis.
lithosphere.
- 2. Multiple Choice
Oceans, polar ice caps, and groundwater would all be considered part of Earth’s __________________________.
geosphere
biosphere
hydrosphere
atmosphere
- 3. Multiple Choice
In a ____________________ feedback loop, the output of a system moving in one direction acts as input that causes the system to move in the other direction.
positive
negative
neutral
- 4. Multiple Choice
Negative and positive feedback loops are similar because
inputs of the cycle are also outputs of the cycle.
True
False
- 5. Multiple Choice
Choose the correct statement about feedback loops:
Negative feedback loops destabilize a system and are rare in natural systems.
Negative feedback loops stabilize a system and are rare in natural systems.
Positive feedback loops destabilize a system and are rare in natural systems.
Positive feedback loops destabilize a system and are common in natural systems.
- 6. Multiple Choice
Positive feedback destabilizes a system and drives it toward a(n) __________________________.
extreme
low
Calm
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