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Globe Showing Europe Africa

Unit 1 - Foundations Of Environmental Systems & Societies

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Herb

Unit 2 - Ecosystems & Ecology

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Flexed Biceps

Unit 3 - Biodiversity & Conservation

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Writing Hand

Unit 4 -Water & Aquatic Food Production Systems & Societies

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Deciduous Tree

Unit 5 - Soil Systems & Terrestrial Food Production Systems & Societies

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Cloud

Unit 6 - Atmospheric Systems & Societies

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Thermometer

Unit 7 - Climate Change & Energy Production

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Briefcase

Unit 8 - Human Systems & Resource Use

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Bar-Chart

Internal Assessment

As you&#39;ve correctly stated, this law dictates that energy cannot be created or destroyed; it can only be converted from one form to another. For instance, chemical energy can be converted to kinetic energy in the human body. In an isolated system, the total energy is constant.

This law says that the total entropy, or randomness/disorder, of an isolated system can never decrease over time. It also states that energy transformations are not 100% efficient, and that some energy is always lost as waste heat. This is why perpetual motion machines are impossible - they violate the second law of thermodynamics.

The third law of thermodynamics states that as the temperature of a system approaches absolute zero (0 Kelvin, or -273.15 Celsius), the entropy of the system approaches a minimum value. This implies that it is impossible to reduce any system to absolute zero in a finite number of steps.

if two thermodynamic systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This law helps define temperature and underpins the concept of a &#39;thermometer&#39; - we can say something is at a particular temperature because it reaches thermal equilibrium with a thermometer.

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In sum, the laws of thermodynamics govern the behavior of energy and heat in systems, and they have deep implications for physics, chemistry, and understanding the universe itself.

Thermodynamics in ESS: Key Laws Explained

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Standard Level

Environmental Systems & Societies SL

Unit 1 - Foundations Of Environmental Systems & Societies

Thermodynamics in ESS: Key Laws Explained

Table of content

First law of thermodynamics (conservation of energy)

Second law of thermodynamics (entropy)

Unlock the Full Content!

Unit 1 - Foundations Of Environmental Systems & Societies

Thermodynamics in ESS: Key Laws Explained

Table of content

First law of thermodynamics (conservation of energy)

Second law of thermodynamics (entropy)

Unlock the Full Content!