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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
- 7. Multiple Choice
What is the point of a feedback loop?
To provide the body with more energy
To provide the body with more food
To make sure the conditions in the body are always changing
To make sure the conditions in the body remain stable
- 8. Multiple Choice
The following is an example of what type of feedback loop?Negative Feedback LoopNeutral Feedback LoopPositive Feedback LoopCowboy Feedback Loop - 9. Multiple Choice
In a positive feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
- 10. Multiple Choice
In a negative feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
- 11. 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
- 12. Multiple Choice
As the ocean heats up, what happens to the amount of dissolved CO2?
It increases
It decreases
It doesn't change
- 13. Multiple ChoiceIn a volcanic eruption, carbon dioxide dissolved in magma is released into the atmosphere during the explosion. What transition is described here?Biosphere to geosphereHydrosphere to biosphereGeosphere to atmosphereAtmosphere to hydrosphere
- 14. Multiple Choice
A wolf population is introduced into an ecosystem, causing the deer population to decrease. The wolf population decreases as the deer population decreases, allowing the deer to begin to increase again. This is an example of what type of feedback?
Neutral
Ecosystem
Positive
Negative
- 15. Multiple Choice
Polar Ice Caps are melting due to an increase in Earth's temperature. This lowers the albedo of Earth, which in turn increases Earth's temperature. This is an example of what type of feedback?
Negative
Neutral
Positive
Ecosystem
- 16. Multiple Choice
Is the graph showing positive or negative feedback?
Positive
Negative
- 17. Multiple Choice
Earth is divided into four different spheres. Which statement is true about the interaction between two of these spheres?
Weather is an interaction between the hydrosphere and the geosphere.
A plant receiving water from precipitation is an interaction between the biosphere and the hydrosphere.
An ice cap providing shelter for an arctic animal is an interaction between the biosphere and the hydrosphere.
The formation of the Grand Canyon is an example of an interaction between the geosphere and the atmosphere.
- 18. Multiple Choice
How do the geosphere and the hydrosphere interact?
The geosphere stores parts of the hydrosphere.
The geosphere erodes (shapes) the hydrosphere.
The hydrosphere stores parts of the geosphere.
- 19. Multiple ChoiceThe major source of the Earth's energy is...Solar EWind EGeothermal ETidal E
- 20. Multiple ChoiceHow does carbon interact with the geosphere?It's dissolved in the oceansAnimals exhale carbon dioxideCarbon is stored in rocks, like coalCarbon release carbon dioside by burning fossil fuels
- Answer choicesTagsAnswer choicesTags