Social Studies Question(1 Marks)

Name of some rivers that form a delta are Ganga, Amazon, Nile, Salwin, Indus, Narmada and Mississippi river.

After distributaries of a river are formed, the river becomes so slow that it begins to deposit its load. As a result, each distributary forms its own mouth and the collection of sediments from all these distributaries forms a delta.

Coastal landforms created by sea waves include sea caves, sea arches, stacks, sea cliffs, and beaches.

The highest waterfall in the world is Angel Falls, located in Venezuela, South America,

Earthquakes are measured using a seismograph, and the Richter scale is used to assess their magnitude.

The focus is the point in the Earth's crust where the earthquake's movement starts, and the epicenter is the point on the Earth's surface directly above the focus.

The three types of earthquake waves are P waves (longitudinal waves), S waves (transverse waves), and L waves (surface waves).

A volcano is a vent or opening in the Earth's crust through which molten material erupts suddenly.

An ox-bow lake is a cut-off lake formed due to cut-off of a meander loop.

Beaches are formed by the deposition of sediments along the sea shores through the sea waves.

Sand dunes are hill-like structures which are formed by the deposition of blowing wind in deserts.

Flood plains are formed by the deposition of fine soil and other materials through floods.

Erosion is the wearing away of the landscape by different agents like water, wind and ice.

Endogenic forces are those forces which act in the interior of the Earth. Exogenic forces are those forces that work on the surface of the Earth.

The plates are moving because of the movement of molten magma inside the Earth.