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Lesson 3

Plate Tectonics, Earthquakes, Weathering and Ecological Balance

Lesson parts

3.1 Introduction — the Earth is a dynamic planetIntroduction — the Earth is a dynamic planet3.1

3.2 The theory of continental drift (Wegener)The theory of continental drift (Wegener)3.2

3.3 The theory of plate tectonicsThe theory of plate tectonics3.3

3.4 Earthquakes and their typesEarthquakes and their types3.4

3.5 Seismic waves and their recordingSeismic waves and their recording3.5

3.6 WeatheringWeathering3.6

3.7 Isostatic balance and the ecological balance of the crustIsostatic balance and the ecological balance of the crust3.7

3.8 Ministry exam trapsMinistry exam traps3.8