The place in the crust where earthquake occurs is called the ________.

_________ is the machine used to measure an earthquake.

The world’s highest waterfall is:

____ is a bend or loop in a river’s course.

Large deposits of loess is found in:

Branches of a river that do not return to the main river are called:

Which is the origin of the seismic energy?

Which is the odd one from the following?

The _______ cuts off from the river and forms an ox bow lake.

Rivers of ice are known as __________.