AP BIOLOGY

ECOLOGY

ENERGY FLOW AND PRIMARY PRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Energy is never created or destroyed
A
First law of thermodynamics
B
Second law of thermodynamics
Explanation: 

Detailed explanation-1: -The first law of thermodynamics states that energy can neither be created nor destroyed, only altered in form. For any system, energy transfer is associated with mass crossing the control boundary, external work, or heat transfer across the boundary. These produce a change of stored energy within the control volume.

Detailed explanation-2: -The first law of thermodynamics thinks big: it deals with the total amount of energy in the universe, and in particular, it states that this total amount does not change. Put another way, the First Law of Thermodynamics states that energy cannot be created or destroyed.

Detailed explanation-3: -1st Law of Thermodynamics-Energy cannot be created or destroyed. 2nd Law of Thermodynamics-For a spontaneous process, the entropy of the universe increases. 3rd Law of Thermodynamics-A perfect crystal at zero Kelvin has zero entropy.

Detailed explanation-4: -The first law of thermodynamics is equivalent to the law of conservation of energy: energy cannot be created or destroyed; the total amount of energy in the Universe is fixed.

Detailed explanation-5: -The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed.

There is 1 question to complete.