Quiz 2.2 Energy & Thermodynamic Laws

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2. The Second Law of Thermodynamics states that in any *

1 point

A. open system, entropy tends to increase spontaneously.

B. open system, entropy tends to decrease spontaneously.

C. isolated system, entropy tends to increase spontaneously.

D. isolated system, entropy tends to decrease spontaneously.

20. Consider these statements concerning the flow of energy through ecosystems, then identify which is a correct evaluation of these statements? *

___Statement 1: The amount of energy that is available to living things decreases as it is transformed and passed along food chains.____Statement 2: As energy is transformed along food chains, no energy is destroyed.

1 point

A. Demonstrates the first law of thermodynamics / Demonstrates the second law of thermodynamics

B. Is unrelated to the laws of thermodynamics / Demonstrates the second law of thermodynamics

C. Demonstrates the second law of thermodynamics / Demonstrates the first law of thermodynamics

D. Demonstrates the second law of thermodynamics / Is unrelated to the laws of thermodynamics

23. Which statement best illustrates the second law of thermodynamics? *

1 point

A. Potential energy increases as energy moves through a system.

B. The amount of energy is unchanged as matter moves through a system.

C. Potential energy decreases as energy and matter move through a system.

D. Energy cannot leave a system.

51. Which statement expresses the second law of thermodynamics? *

1 point

A. The amount of energy available to do useful work in a system decreases over time.

B. Energy can neither be created nor destroyed.

C. Entropy will always decrease spontaneously in a system over time.

D. Energy inputs equal energy outputs.

58. Which statement describes the result of the first law of thermodynamics? *

1 point

A. In any isolated system entropy tends to increase spontaneously.

B. Heat energy always flows spontaneously from hot to cold.

C. Energy always transfers from a more useful form to a less useful form.

D. Energy input always equals energy output.

62. What does the first law of thermodynamics tell us? *

1 point

A. Doing work always creates heat.

B. Entropy tends to increase.

C. Energy cannot be recycled.

D. All energy comes from other energy.

67. Which statement best illustrates the second law of thermodynamics? *

1 point

A. When chemical energy such as food is converted into mechanical energy such as movement, much energy is lost as heat.

B. Total energy inputs to the biosphere are equal to total energy outputs.

C. Solar energy is converted into chemical energy in photosynthesis.

D. Energy is neither created nor destroyed, but it may be converted from one form to another.

70. Which statement best describes the second law of thermodynamics? *

1 point

A. In all ecosystems, energy is neither created nor destroyed, but it may be converted from one form to another.

B. Energy cannot leave a system.

C. The entropy of a system always remains constant for a spontaneous process.

D. In any isolated system entropy tends to increase spontaneously.

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

1 point

A. always equal to energy output.

B. usually greater than energy output.

C. always greater than energy output.

D. always less than energy output.

80. “The change in a system’s internal energy is equal to the energy absorbed by the system minus the energy released into its surroundings.” *

This statement best illustrates

1 point

A. the law of conservation of mass.

B. the first law of thermodynamics.

C. the second law of thermodynamics.

D. the third law of thermodynamics.

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