This video is the best and most complete visual description of the motions of the Sun-Earth system I’ve been able to find. It includes visual explanations of the seasons, different ways of measuring the length of a year, and changes in tilt and wobbles with periods of tens or hundreds of thousands of years (the Milankovitch cycles) that largely guide our global climate.
Watch: Earth's motion around the Sun, not as simple as I thought [Aryan Navabi]
(I suggest that you do not download the pdf version, as suggested by the website or popup, but just access the online version.)
CHAPTER 6: Energy and Matter
Each chapter of the online text Fundamentals of Physical Geography includes a Study Guide page. At the bottom of each Study Guide page is a list of Essay Questions. Responses to questions from the book may be partially copied and pasted from the text, but most of the writing should be your own. Take your answers, at least in part, from the section of that chapter that discusses the topic at hand. Do not take them from the summary of the chapter. Use your own words most of the time, and incorporate what you learn from the videos.
Describe the internal and external sources of energy for the Earth, based on the second video.
Chapter 6 Essay Questions 3, 5, 6, 7, 9 , 12:
6.3. How do conduction, convection and radiation move energy from one place to another?
6.5. What is radiation? How is it created? What factors determine its quantity and quality?
6.6. Define the Stefan-Boltzmann Law. What does it describe?
6.7. Define Wien's Law. What does it describe?
6.9. How does the Sun create the energy that drives most systems on the Earth?
6.12. How does angle of incidence control the intensity of solar radiation received at the Earth's surface?
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