Question

Which is the largest intermontane plateau of North America?
A. Alaska Plateau
B. Great Basin
C. Columbia Plateau
D. Colorado Plateau

Answer 1

Hint: The region of Western United States is comprised of intermontane plateaus and mountain ranges. It is divided into physiographic regions, which are further subdivided into physiographic sections.

Complete Answer: Looking at the above options:

Option A: York Plateau is situated in Alaska. It is located beyond the western front of the York Mountains and is dissected in nature. This option is incorrect.

Option B: The Great basin is a group of five or six plateaus. This area is called so because the streams and rivers here have no outlet to the sea. This option is incorrect.

Option C: The Columbia Plateau is located in the interior part of the Columbia river basin. It is formed as the outcome of consecutive flows of basalt. This option is incorrect.

Option D: The Colorado Plateau is a large plateau in North America. It covers neraly 337,000 km² of area. It is a huge, structurally unchanged, high elevated, tectonically impenetrable region that covers a large part of the southwest region of North America. This option is correct.

The correct option is D.

Note:
- The largest plateau in the world which is referred to as the "roof of the world" is the Tibetan plateau. It stretches through the region of China, Tibet and India.
- The smallest plateau in the world is Yellowstone National Park.
- Plateaus are often rich sources of minerals.