Question

Observe the following pictures and discuss the questions in the class.

1. What might be the reasons behind buildings collapsing in photo 1?
2. Which event is depicted in photo 2? What impact does it bring about in the surroundings?
3. In photo 3, what could be the reason behind the bend in the rock strata?
4. What could be the reason behind the difference in altitudes of the land and the steepness of the slope in photo 4?
5. Classify the events in the photos into sudden and slow movements.
6. Example of which of these movements is not likely to be found in the mainland of the Indian sub-continent?

Answer 1

1. The major reason behind the buildings collapsing in photo 1 is the occurrence of earthquakes.
2. The volcanic eruption and flowing of lava are depicted in photo 2. Heavy loss of life and property is experienced when the lava flows to the surrounding area.
3. Due to compression of sediments within the earth's interior and pressure from overlying layers the rock strata seems to be bend.
4. The reason could be the displacement of rock due to vertical movement. It may form plateau on block mountains.
5. Sudden movements are earthquakes and volcanoes in photos 1 and 2. Slow movements are the formation of folds and formation of plateaus or block mountains in photos 3 and 4.
6. The volcanic eruptions are not found in the mainland India sub-continent.