geomorphology & earth landforms section 4 MCQ Questions & Answers Detailed Explanation

Answer: (c)

Volcanic eruptions, earthquakes, flash floods, landslides, severe thunderstorms, lightning, and wildfires are all examples of sudden natural hazards which develop with little warning and strike rapidly.

However, a bolt of lightning is the minimum short term hazard of all which lasts few seconds. Lighting is one of the most spectacular results of a thunderstorm.

Answer: (a)

Answer: (c)

1. Piedmont Plateau has a mountain on one side e.g. Patagonia Plateau.
2. Continental Plateau in surrounded by oceans or plains from all sides. e.g. Potwar plateau
3. Intermontane Plateau is surrounded by mountains from all sides. e.g. Bolivian Plateau.
4. Lava Plateau is originated from basaltic lava during numerous successive volcanic eruption e.g. Antrim Plateau.

Answer: (a)

Tropical grasslands (Savannas) are located near the equator, between the Tropic of Cancer and the Tropic of Capricorn. They cover much of Africa as well as large areas of Australia, South America, and India.

They are found in tropical wet and dry climates. These areas are hot year-round, usually never dropping under 64 degrees Fahrenheit. Although these areas are overall very dry, they do have a season of heavy rain. Annual rainfall is from 20-50 inches per year. It is crucial that the rainfall is concentrated in six or eight months of the year, followed by a long period of drought when fires can occur.

Savannas are associated with several types of biomes. Savannas are frequently in a transitional zone between forest and desert or grassland. Savanna covers approximately 20% of the Earth’s land area.

Answer: (d)

Answer: (b)

Most earthquakes are minor tremors. Larger earthquakes usually begin with slight tremors but rapidly take the form of one or more violent shocks, and end in vibrations of gradually diminishing force called aftershocks.

The subterranean point of origin of an earthquake is called its focus; the point on the surface directly above the focus is the epicentre.