Physical Geography Quiz 3

Bauxite ore is the world's primary source of aluminium. The ore must first be chemically processed to produce alumina (aluminium oxide). Alumina is then smelted using an electrolysis process to produce pure aluminium metal.

Pluto was the planet furthest away from the Sun is coldest. However, due to the IAU's decision in 2006 to reclassify Pluto as a “dwarf planet”.

The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.

The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years.

The plateau is also called a high plain or a tableland. The topography of the plateau is ideal for the generation of hydropower.

The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols. Troposphere is the warmest because it is closest to the ground, where the heat is coming from.

Keoladeo National Park in Bharatpur, Rajasthan hosts thousands of migratory birds. It is famous for nesting its resident birds as well as for guest migratory birds including the rare Siberian Cranes.

The ionosphere is said to be responsible for lightning and propagation of radio waves. It is also responsible for ionizing the atmosphere by solar radiation. It is a 48 km to 965 km vertical stretch, which roughly overlaps the thermosphere and the exosphere.

The Campos, grassland with few trees or shrubs except near streams, lies between 24°S and 35°S; it includes parts of Brazil, Paraguay and Argentina, and all of Uruguay.

Colourado, a western USA state, has a diverse landscape of arid desert, river canyons and snow-covered Rocky Mountains, which are partly protected by Rocky Mountain National Park. The Grand Canyon is a steep-sided canyon carved by the Colourado River.