The two forces, Orogenic and Epeirogenic that originate deep inside the earth:

1. Exogenic forces
2. Continent building movements
3. Diastrophic forces
4. Collisional movements

The forces operating on the surface of the earth which cause formation of landforms are called:

1. Exogenic forces
2. Orogenic forces
3. Diastrophic forces
4. Epeirogenic forces

Oceanic trenches in combination with volcanic mountain systems lead to the formation of:

1. Troughs
2. Ridges
3. Fold mountains
4. Synclines

Volcanic activities are common in which of the following?

1. Young fold mountains
2. Old fold mountains
3. Residual mountains
4. Volcanic plateaus