geomorphology & earth landforms section 8 MCQ Questions & Answers Detailed Explanation

Answer: (d)

A levee, dike, dyke or flood bank is a broad, low embankment built up along the banks of a river channel during floods.

Levees are usually parallel to the way the river flows, so levees can help direct the flow of the river. Levees can also be artificially created or reinforced.

Answer: (a)

Answer: (d)

Answer: (a)

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometres). But, if we measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km).

Thus, the earth is a tad wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).

Answer: (d)

Answer: (c)

Arkose is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.

It is commonly coarse-grained and usually either pink or grey (depending on the colour of feldspar).