In this lesson, our instructor Bryan Cardella gives an introduction on alternative energy. He discusses nonrenewable energy verse renewable energy, solar energy, active solar energy, solar thermal generators, fuel cells, water power basics, small scale and environmental impact, ocean energy, wind power, biofuels, and geothermal energy.
Non-renewable energy and renewable energy are the two categories of alternative energy resources (not from fossil fuels)
Solar energy can be passive (via architectural design) or active (like with solar panels.) Active solar energy involves mechanical to move air and/or water in units such as solar collectors or photovoltaics
Solar thermal generators project light energy onto a container to heat up a water supply in order to run machines or provide energy
Fuel cells (i.e. hydrogen fuel cells) are a highly efficient option for powering machines such as cars, but currently the technology is expensive to mass produce
Water power has been in use since ancient times, but today it is largely done via hydroelectric dams and pump storage systems
There are numerous negative impacts from large-scale dams: blocked fish migrations, accumulated sediment, more evaporation, etc.
Ocean energy and tidal power can be harnessed in coastal regions
Wind power can generate energy via wind turbines. It is today’s cheapest form of alternative energy and its use is growing at a fast rate
Biofuels (firewood, organic waste, crop fuel) are the oldest form of energy consumed by humans, and today over 1 billion people use wood as their primary source of energy
Geothermal energy can be deep-earth (high density) or shallow-earth (low density). Its use is a small fraction of the total alternative energy usage but it may become more common in the future
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Environmental Science concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
This book is an updated manual that offers a brand-new diagnostic test to pinpoint the test taker's strengths and weak areas, two full-length practice exams with all questions answered and explained, a detailed review of all test topics, supplemented with practice questions and quizzes with answers, an overview of the test plus helpful test-taking strategies, and hundreds of diagrams and illustrations .