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Ch 49: Praxis General Science: Science, Technology & Society

About This Chapter

Study this chapter to refresh your knowledge of the ever-evolving fields of science and technology and how they impact society. A careful examination of these lessons will help prepare you for the Praxis General Science test.

Praxis General Science: Science, Technology & Society - Chapter Summary

These lessons will review how science and technology have developed in the years following World War II, with careful attention given to specific aspects of how these fields have impacted society. As you prepare for the Praxis General Science test, review this chapter, which will detail the following developments, impacts, and components of science and technology:

  • Natural gas and oil reserves
  • Environmental concerns over fracturing and shale gas
  • Chemical processes in household and industrial environments
  • Examples of a nuclear reaction
  • Uses of radioactive substances
  • Safety concerns over radioactive waste
  • Effects of chemical processes on the atmosphere and aquatic and terrestrial environments
  • Protecting the environment from chemicals
  • Definition of genetic engineering
  • DNA technology and how it is used

You will be led through these lessons by a science expert who will concisely convey the information to you. The content will be presented in videos and transcripts so you may absorb the material in more than one format. After you finish each lesson, take the accompanying quiz which will help gauge how well you comprehend what you've reviewed.

9 Lessons in Chapter 49: Praxis General Science: Science, Technology & Society
Test your knowledge with a 30-question chapter practice test
The Advance of Science & Technology Since 1945: Developments & Impact

1. The Advance of Science & Technology Since 1945: Developments & Impact

In this lesson, we explore just a few of the numerous advances and innovations made in the worlds of sciences and technology, from automobiles and televisions to computers and phones that can fit in the palm of your hand.

Oil and Natural Gas Reserves: Availability, Extraction and Use

2. Oil and Natural Gas Reserves: Availability, Extraction and Use

Oil and natural gas reserves are found underground and must be extracted using a drilling method. In this lesson you will learn about the many uses of oil and natural gas, the availability of these valuable resources and how they are extracted.

Shale Gas: Hydraulic Fracturing and Environmental Concerns

3. Shale Gas: Hydraulic Fracturing and Environmental Concerns

Shale gas is a type of natural gas that is found trapped within sedimentary rock. It is extracted using a procedure called hydraulic fracturing. In this lesson, you will learn about hydraulic fracturing and the environmental concerns raised by use of this extraction technique.

Nuclear Reaction: Definition & Examples

4. Nuclear Reaction: Definition & Examples

Learn the differences between a nuclear reaction and a chemical reaction. Also learn how the nuclear reaction involves subatomic particles including protons and neutrons. Discover the different types of nuclear reactions including fission and fusion and also how a nuclear power plant works to produce energy.

What Are Radioactive Substances? - Examples & Uses

5. What Are Radioactive Substances? - Examples & Uses

This lesson will explain what a radioactive substance is, give examples of radioactive substances and describe how radioactivity is used in everyday life.

Risks of Nuclear Power Plants and Radioactive Waste: Safety and Health Concerns

6. Risks of Nuclear Power Plants and Radioactive Waste: Safety and Health Concerns

Nuclear power can generate electricity without greenhouse gas emissions. However, there are concerns about its safety. Learn about the safety and health concerns associated with the threat of nuclear meltdowns, as well as the challenges involved in storing radioactive waste.

Chemical Processes Affecting Aquatic & Terrestrial Environments

7. Chemical Processes Affecting Aquatic & Terrestrial Environments

In this lesson, we'll be learning about processes that release chemicals into aquatic and terrestrial systems. We'll cover eutrophication, groundwater contamination, water purification and fluoridation.

What is Genetic Engineering? - Definition and Examples

8. What is Genetic Engineering? - Definition and Examples

How do we make the insulin used by diabetic patients? In this lesson, you'll learn the basics of how genetic engineering can be used to transform a bacterial host cell into a genetically-modified organism that produces human insulin.

Practical Applications of DNA Technology

9. Practical Applications of DNA Technology

DNA technology is a field that has many applications for our everyday lives. In this video lesson, you will learn about some of the important contributions of DNA technology to industries such as medicine, agriculture and criminal investigation.

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.
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