Chapter 2 Endogenetic Movements
- Explain the types of volcanoes on the basis of periodicity of eruption with examples. On the basis of periodicity of eruption, volcanoes are of three types: active, dormant and extinct. Active volcanoes: They erupt frequently... 1
- Explain the types of seismic waves. The seismic waves can be divided into primary, secondary and surface waves. Primary Seismic Waves reach first to the surface of the earth af... 1
- What are the effects of earthquakes on the earth’s surface and human life? Effects of earthquakes on the earth’s surface and human life are- Buildings collapse and loss of life and property. Communication system col... 1
- How is the magnitude of the earthquake-related to the collapse of houses High Magnitude creates high movement of the Earth Crust. Due to excessive vibration the houses on the earth crust collapse. 1
- Which type of movements have led to the formation of the major fold mountains in the world? Fold mountains are formed due to mountain-building (erogenic) movements. Energy is transferred from the interior of the Earth. Because of th... 1
- Give reasons why an earthquake occurs. When the movements occur in the interior of the Earth, tremendous tension is created in the Earth’s crust. When the tension goes beyond limi... 1
- Distinguish between Earthquakes and volcanoes Earthquakes Volcanoes (i) Earthquake is the movement of the Earth’s crust. A volcano is an opening in the Earth’s crust from which hot solid... 1
- Distinguish between Primary and Secondary Seismic Waves Primary Seismic Waves Secondary Seismic Waves Primary Seismic Waves reach first to the surface of the earth after the energy is emitted in t... 1
- Distinguish between Block Mountain and Fold Mountain Block Mountain Fold Mountain Block Mountain is created due to Tension. Fold mountain is created due to compression. Here horizontal waves of... 1
- Volcanic eruptions can cause earthquakes. Generally, the movements in the Earth’s interior occur in the upper layer of the mantle Tremendous energy is released by radioactive materia... 1
- The Barren Island is becoming conical in shape. Barren island which was considered a dormant volcano has become active since February 2017. Mainly dust, smoke and mud are coming out of thi... 1
- Most of the volcanoes are found on the plate boundaries. The plate boundaries are directly related to the areas of volcanoes. Most of the volcanoes are located on the plate boundaries. The part of... 1
- There is a difference in the formation of the Meghalaya Plateau and the Deccan Plateau. Meghalaya Plateau is the example of Block Mountain which had formed because of internal movements where horizontal waves moving away from ea... 1
- Buildings collapsed at the foothills of the Himalayas because of an earthquake. Before collapsing they were moving The seismic waves can be divided into primary, secondary and surface waves. The primary waves are the first ones to reach the surface of the... 1