Physical Geography Online Quiz

The trade winds or easterlies are the permanent east-to-west prevailing winds that flow in the Earth's equatorial region. It is defined as steady and persistent winds which blow on the Equatorial side of the subtropical high-pressure systems in both Hemispheres.

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.

Westerlies are called anti-trade wind. The westerlies are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude. They originate from the high-pressure areas in the horse latitudes and trend towards the poles and steer extratropical cyclones in this general manner.

River erosion is at the greatest where river's flow is fast. The outer bank has the greatest erosion because the water is flowing faster along the outer bank than the inner bank.

Winters more severe in Southern Hemisphere than in Northern Hemisphere because of more iceberg activity in Southern Hemisphere. Northern Hemisphere is 39% land and 61% ocean while Southern Hemisphere is 19% land and 81% ocean. As absorbing rate of land is much higher then water, land heat up quickly but water(ocean) take time. That is the reason the average temp in northern hemisphere is 15.2 degree C while that of southern hemisphere is 13.3 degree C.

Granite is a coarse-grained Igneous Rock composed mostly of quartz, alkali feldspar, and plagioclase.

An earthquake is caused by a sudden slip on a fault. The tectonic plates (Earth's outermost layer) are always slowly moving, but they get stuck at their edges due to friction. Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere.

The chromosphere is the second of the three main layers in the Sun's atmosphere and is roughly 3,000 to 5,000 km deep. Its rosy red colour is only apparent during Solar eclipses.

A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.

Venus is the brightest planet in our Solar System. It can be seen with the unaided eye from Earth.