Earthquakes And Volcanoes
Aperçu
The ground beneath your feet feels solid and still, yet the Earth's outer shell is broken into vast slabs that creep, grind and pull apart all the time. Where these tectonic plates meet, the planet releases its energy in two of the most dramatic natural hazards we know: earthquakes that can level a city in seconds, and volcanoes that build mountains and darken skies. The same forces that put millions of people at risk also create some of the most fertile farmland and spectacular scenery on Earth.
In this lesson you will learn why earthquakes and volcanoes cluster where they do, how the three types of plate boundary work, and what actually happens during an eruption. You will then follow the exam-ready chain that Environmental Management questions always reward: the causes of a tectonic event, its impacts on people and the environment, and the strategies used to manage it before, during and after, illustrated by real disasters such as the 2010 Haiti earthquake and the 2011 Japan earthquake and tsunami.
Objectifs
- 6.1.1 Describe the structure of the Earth, limited to: (a) crust (b) mantle (c) core.
- 6.1.2 Identify the Earth’s continents: Africa, Antarctica, Asia, Europe, North America, Oceania and South America.
- 6.1.3 Describe and explain the distribution of earthquakes and volcanoes, limited to: (a) tectonic plates and their movement (b) hotspots.
- 6.1.4 Describe how convection currents in the mantle result in plate movements that cause earthquakes and the formation of volcanoes, limited to: (a) divergent or constructive plate boundaries: plates move apart causing volcanic activity and earthquakes (b) convergent or destructive plate boundaries: subduction of one plate beneath another causing earthquakes and a line of volcanoes (c) conservative plate boundaries: plates slide past each other causing earthquakes.
- 6.1.5 Describe the features of earthquakes, limited to: (a) release of energy (b) focus (c) epicentre (d) magnitude: Moment Magnitude Scale.
- 6.1.6 Describe the features of volcanic eruptions, limited to: (a) magma rising to the surface to form lava (b) ash (c) gases: water vapour, carbon dioxide and sulfur dioxide (d) acid rain (e) volcanic bombs (f) pyroclastic flows.
- 6.1.7 Describe and explain the impacts of tectonic events on people and the environment, limited to: (a) damage to buildings and infrastructure (b) loss of crops, livestock and habitats (c) evacuation of people and livestock (d) fire (e) tsunamis (f) landslides (g) contamination of drinking-water supplies (h) water-related disease (i) financial losses (j) human health.
- 6.1.8 Describe strategies for managing the impacts before, during and after a tectonic event, limited to: (a) monitoring and warning (b) land use zoning (c) structure of buildings (d) disaster preparation (plans, drills, emergency supplies and emergency rescue teams) (e) evacuation (f) shelters (g) rebuilding of damaged areas (h) international aid.
- 6.1.9 Discuss the benefits and limitations of strategies for managing the impacts before, during and after a tectonic event.
- 6.1.10 Describe and explain the opportunities provided by volcanoes to people, limited to: (a) fertile soils (b) extraction of minerals (c) building materials (d) geothermal power (e) tourism.
Note de cours
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Évaluation de la leçon
Félicitations, vous avez terminé la leçon sur Earthquakes And Volcanoes. Maintenant que vous avez exploré le concepts et idées clés, il est temps de mettre vos connaissances à lépreuve. Cette section propose une variété de pratiques des questions conçues pour renforcer votre compréhension et vous aider à évaluer votre compréhension de la matière.
Vous rencontrerez un mélange de types de questions, y compris des questions à choix multiple, des questions à réponse courte et des questions de rédaction. Chaque question est soigneusement conçue pour évaluer différents aspects de vos connaissances et de vos compétences en pensée critique.
Utilisez cette section d'évaluation comme une occasion de renforcer votre compréhension du sujet et d'identifier les domaines où vous pourriez avoir besoin d'étudier davantage. Ne soyez pas découragé par les défis que vous rencontrez ; considérez-les plutôt comme des opportunités de croissance et d'amélioration.
- Which layer of the Earth contains the convection currents that move the tectonic plates? A. Crust B. Mantle C. Outer core D. Inner core Answer: B
- At which type of plate boundary do plates slide past each other, causing earthquakes but no volcanoes? A. Constructive B. Destructive C. Conservative D. Collision Answer: C
- The point on the Earth's surface directly above the origin of an earthquake is called the: A. Focus B. Fault C. Epicentre D. Magnitude Answer: C
- Which volcanic hazard is a fast-moving, super-hot cloud of gas and ash? A. Lava flow B. Pyroclastic flow C. Acid rain D. Ash fall Answer: B
- Which of the following is an opportunity provided by volcanoes? A. Pyroclastic flows B. Geothermal power C. Tsunamis D. Acid rain Answer: B
Disponible sur l'application Green Bridge
Téléchargez l'application Green Bridge CBT sur votre téléphone ou votre ordinateur pour accéder aux notes de cours complètes, aux questions pratiques, et plus encore.
Disponible sur l'application Green Bridge
Téléchargez l'application Green Bridge CBT sur votre téléphone ou votre ordinateur pour accéder aux notes de cours complètes, aux questions pratiques, et plus encore.
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