Question : The breaking up of the rocks on the Earth's surface is called ________.

Option 1: weathering

Option 2: stacking

Option 3: meandering

Option 4: sorting

Question : The forces which work on the surface of the Earth are called:

Option 1: frictional forces

Option 2: endogenic forces

Option 3: conventional forces

Option 4: exogenic forces

Question : The streams of water flowing constantly on the ocean surface in definite directions are called _________.

Option 1: waves

Option 2: cyclones

Option 3: tides

Option 4: ocean currents

Question : If the curved surface area of a solid cylinder is two-fifths of its total surface area, then what is the ratio of its diameter to its height?

Option 1: 2 : 5

Option 2: 1 : 2

Option 3: 2 : 3

Option 4: 3 : 1

Question : The lowest temperature at which a substance catches fire is called its ___________.

Option 1: melting point

Option 2: explosion point

Option 3: ignition temperature

Option 4: combustion temperature