NCERT Chapter Summary: Our Changing Earth

NCERT Chapter Summary: Our Changing Earth

1. What are lithosphere plates?

The earth's crust consists of several large and several small rigid, irregularly shaped plates which carry continents and the ocean floor. The lithosphere is broken into a number of plates called lithosphere plates.

2. What is a volcano?

A Volcano is a vent (opening) in the earth’s crust through which molten materials erupt suddenly.

3. What do endogenic forces produce?

Endogenic forces sometimes produce sudden movements and some other times produce slow movements. Sudden movements like earthquakes and volcanoes cause mass destruction over the surface of the earth.