ESS 1.3 Quiz - Equilibria and Energy

Which of the following contributes most effectively to self-regulation within a system?

• Rapid transfer of materials

• Inputs of energy being greater than outputs

• Negative feedback mechanisms

• Positive feedback mechanism

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NGSS.HS-LS1-3

A stable ecosystem will be in . . . (I) . . . equilibrium, achieved largely through mechanisms of . . . (II) . . . feedback. *

Complete this statement with (I) and (II) respectively.

• Steady state____Positive

• Static_________Negative

• Steady state____Negative

• Static_________Positive

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NGSS.HS-LS1-3

The capacity of a system to self-regulate is generally increased by *

• the presence of positive feedback.

• the presence of negative feedback

• low energy inputs in the system.

• energy outputs greater than energy inputs in the system.

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NGSS.HS-LS1-3

Which of the following is an essential feature of a system in steady-state equilibrium? *

• Negative feedback mechanisms

• Positive feedback mechanisms

• Balanced inputs and outputs

• High diversity

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NGSS.HS-LS1-3

Of what is the diagram above an example? *

• Negative feedback

• Positive feedback

• Steady-state equilibrium

• Static equilibrium

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NGSS.HS-LS1-3

Which of the following is the best definition of a system?

• A set of biological components and their physical interactions

• A set of components that function in an independent manner

• An assemblage of parts, and their relationships, forming a whole

• An assemblage of parts in which there are no changes over time

The diagram above is an example of *

• steady state equilibrium.

• static equilibrium.

• positive feedback.

• negative feedback.

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NGSS.HS-LS1-3

Over a long period of time, energy input to a system is *

• always equal to energy output.

• always less than energy output.

• always greater than energy output.

• usually greater than energy output.

The accelerating decline in the population of a country in which the average age was increasing, provides an example of which of the following?

• Negative feedback

• Positive feedback

• Steady-state equilibrium

• A demographic transition model

As disease spreads through a population, numbers fall. As the result of a reduction in contact between individuals, the rate of spread of the disease is reduced. This is followed by a recovery in numbers.

• positive feedback

• negative feedback

• demographic transition

• entropy

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NGSS.HS-LS1-3