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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/planet-earth
课程评论：没有评论
课程名称：地球与您！ 课程概述：本课程探讨了地球的多种现象，包括地震、火山、山脉形成、冰河时代、滑坡、洪水以及生命演化等。这些现象在漫长的地质时间中相互作用，塑造了我们今天所生活的动态星球。课程将从地质学的角度，概述我们家园的多个方面。我们将首先讨论地震，包括它们的定义、成因、影响和应对措施。课程强调板块构造理论，这一地质学的统一理论解释了地球表面在地质时间尺度上的巨大变化，以及为何当前的地质活动（如地震）会在特定区域发生。我们还将研究火山及其喷发类型，最后探讨现代社会所依赖的能源与矿产资源的形成过程，以理解未来环境与可持续发展的挑战。 课程大纲： 1. **课程简介**：熟悉课程、同学以及学习环境，获得必要的技术技能。 2. **第一周：地震**：学习地震的定义、发生机制、记录与测量方法及损害减轻措施，进行相关实验和讨论。 3. **第二周：板块构造**：探讨大陆漂移假说的发展，了解板块构造理论如何统一解释地震、火山、冰川时代、化石和山脉等现象。 4. **第三周：火山**：了解岩石熔化和不同喷发类型，研究历史火山喷发事件及其影响，探讨防灾措施。 5. **第四周：岩石与矿产资源**：研究日常环境中的地球资源，利用谷歌地球考察全球矿业，讨论开采的利弊。 6. **第五周：能源资源**：分析现代社会的能源使用，特别是化石燃料，进行全球能源生产地的虚拟考察，讨论能源使用对环境和气候的影响。 本课程旨在通过对地质现象的深入了解，帮助学生增强对地球环境及可持续发展的认知。
Name:Orientation
Description:You will become familiar with the course, your classmates, and our learning environment. The orientation will also help you obtain the technical skills required for the course.
Name:Week 1: Earthquakes!
Description:In the lectures for this week, we will consider what an earthquake is, how it occurs, how we can record and measure its size, and what we can do to mitigate damage. Our first weekly assignment consists of reporting your own experience with earthquakes (if any). The Week 1 Lab gives you a chance to work with seismograms, locate an earthquake epicenter, and determine magnitude. Finally, the Week 1 Discussion addresses the balance between risks from quakes and costs of preventive measures.
Name:Week 2: Plate Tectonics
Description:In the early twentieth century, publication of the hypothesis on continental drift caused an uproar that soon died down. Data collected in mid-century led geologists to reconsider the idea that continents could move. During the 1960s and 1970s, old ideas were reworked into what is now called the theory of plate tectonics. As we will see, this robust theory encompasses many geological phenomena that appear to be unrelated at first glance: earthquakes and volcanoes, but also ice ages, fossils, and mountains. Today, plate tectonics provides an overarching framework for interpreting the Earth. We study its details in Week 2, but we will return to this theory again and again throughout the rest of this course.
Name:Week 3: Volcanoes!
Description:This week, you will learn how and where rocks can melt, and what happens when molten material of various compositions bursts out of the ground. The lecture videos also cover different types of eruptions, as well as the rocks and mountains produced by them. In the lab, you will study details about the 1980 eruption of Mount St. Helens and the eruption of Mount Vesuvius in the year 79. The discussion forum gives you the opportunity to weigh risks to people living on or near volcanoes and what can be done to minimize damage and loss of life. The weekly assignment provides a place for you to share your own experiences with volcanoes or eruptions or, if you have never been near a volcano, your thoughts about such events.
Name:Week 4: Rocks and Mineral Resources
Description: As part of the Week 4 Assignment, you will take a close look at your daily surroundings to identify Earth resources. The video lectures for the week examine various aspects of finding, extracting, and using resources such as metals and stones. For the lab, you will utilize Google Earth to examine several mining sites around the world. In the discussion, you will weigh the pros and cons of mining operations, as many communities have had to do already. This week also includes peer grading discussions, as explained on the How Graded Discussions Work page. Finally, we provide an optional assignment for those who would like to identify some common minerals.
Name:Week 5: Energy Resources
Description:The video lectures for this week cover various aspects of energy usage by modern civilization, especially our utilization of fossil fuels. The Week 5 Lab sends you on a Google Earth tour of energy-producing sites around the world, places where both conventional and alternative forms of energy are being generated. The Week 5 Assignment gives you a chance to survey your own personal use of energy – where does it come from and how much do you use – and then to share the information with others in the class. During the Week 5 Discussion, you will consider the implications of how society uses the energy of fossil fuels and the implications for the local environment and global climate.
Earthquakes, volcanoes, mountain building, ice ages, landslides, floods, life evolution, plate motions—all of these phenomena have interacted over the vast expanses of deep time to sculpt the dynamic planet that we live on today. Planet Earth presents an overview of several aspects of our home, from a geological perspective. We begin with earthquakes—what they are, what causes them, what effects they have, and what we can do about them. We will emphasize that plate tectonics—the grand unifying theory of geology—explains how the map of our planet's surface has changed radically over geologic time, and why present-day geologic activity—including a variety of devastating natural disasters such as earthquakes—occur where they do. We consider volcanoes, types of eruptions, and typical rocks found there. Finally, we will delve into the processes that produce the energy and mineral resources that modern society depends on, to help understand the context of the environment and sustainability challenges that we will face in the future.
