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Ch 45: Humans & the Environment - ORELA Middle Grades Social Science

About This Chapter

Refresh your knowledge of humans and the environment by watching short and engaging video lessons. In no time, you will be prepared to tackle this subject area on the ORELA Middle Grades Social Science assessment.

Humans & the Environment - ORELA Middle Grades Social Science - Chapter Summary

This chapter can help you review concepts related to humans and the environment that you haven't explored in months or years. Watch the lessons to make sure you're prepared to answer questions on the ORELA assessment that address:

  • The meaning of IPAT and the factors associated with human impact on the environment
  • Problems related to deforestation, desertification and declining biological diversity
  • Ways the Agricultural Revolution and Industrial Revolution have impacted the environment
  • Emerging nations, their industrial development and problems in urban environments
  • Industrial ecology, pollution and the human causes of eutrophication
  • The five main greenhouse gases and enhanced greenhouse effect
  • Minerals, energy resources and the reasons why natural resources are being depleted worldwide

Instructors present the lessons in an entertaining fashion that makes studying for the exam fun. Stay engaged with quality definitions and explanations of humans and the environment that are presented with the help of unique visual effects.

11 Lessons in Chapter 45: Humans & the Environment - ORELA Middle Grades Social Science
Test your knowledge with a 30-question chapter practice test
What Is IPAT? - Factors of the Human Impact on the Environment

1. What Is IPAT? - Factors of the Human Impact on the Environment

What do the letters IPAT have to do with the environment? Learn how this four-letter equation helps explain the environmental impact of different variables, including population, affluence, and technology.

Deforestation, Desertification & Declining Biological Diversity

2. Deforestation, Desertification & Declining Biological Diversity

When trees are lost due to deforestation, the result can be a drier climate and desertification or the transformation of the once fertile land to desert. Learn how deforestation and desertification can lead to a decline in biological diversity.

The Agricultural Revolution: Impacts on the Environment

3. The Agricultural Revolution: Impacts on the Environment

The Agricultural Revolution was a time of agricultural development that saw many inventions and advancements in farming techniques. Learn about the Agricultural Revolution and how this period impacted society and the environment.

The Industrial Revolution: Impacts on the Environment

4. The Industrial Revolution: Impacts on the Environment

The Industrial Revolution was marked by the introduction of power-driven machinery and ushered in a time of strong economic development. Learn how advancements made during the Industrial Revolution impacted the environment.

Industrial Development of Emerging Nations and the Environment

5. Industrial Development of Emerging Nations and the Environment

Industrial development has brought economic prosperity to a number of less developed countries. Learn about the environmental challenges and risks associated with these newly emerging national economies.

What Is Industrial Ecology? - Definition and Examples

6. What Is Industrial Ecology? - Definition and Examples

Industrial ecology is a young science that studies industrial systems with the goal of finding ways to lessen their environmental impact. Learn how industries are using industrial ecology to reduce the use of natural resources and generate less waste.

Pollution: Physical, Chemical & Biological

7. Pollution: Physical, Chemical & Biological

Pollution is the presence of unwanted substances in an environment. It is often the result of human interference. Learn about physical, chemical and biological pollutants and see examples of each.

Human Causes of Eutrophication

8. Human Causes of Eutrophication

Eutrophication occurs when a body of water becomes overly enriched with nutrients. While this can happen naturally, accelerated eutrophication is typically the result of human activities. Learn about the human causes of eutrophication.

Greenhouse Gases and the Enhanced Greenhouse Effect

9. Greenhouse Gases and the Enhanced Greenhouse Effect

In this video lesson, you will learn about the five main greenhouse gases and how their unnaturally high concentrations are leading to the enhanced greenhouse effect and global climate change on Earth.

Extraction and Processing of Minerals & the Environmental Impacts of Mineral Use

10. Extraction and Processing of Minerals & the Environmental Impacts of Mineral Use

In this lesson, you will learn about the different methods used to extract minerals from the ground and gain an understanding about how different types of mining affect the environment.

What Are Natural Resources? - Definition & Types

11. What Are Natural Resources? - Definition & Types

Natural resources are materials provided by the Earth that humans can use to make more complex (human-made) products. In this lesson, you will learn some examples of natural resources and how to classify them.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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