Physical Geography Online Quiz

Four major types of air masses that influence the weather in North America are: Maritime Tropical (mT), Maritime Polar (mP), Continental Tropical (cT) and Continental Polar (cP). The climate of North America is influenced during winter by the Continental Polar air mass. The most common example of continental polar air entering the U.S. comes in winter, when the jet stream dips southward, carrying cold, dry cP air, sometimes as far south as Florida. When it moves across the Great Lakes region, cP air can trigger lake effect snow.

Sand dune covered eastern portion of the Great Indian (Thar) Desert in western Rajasthan. It the depositional features which are formed due to the deposition of sand particles carried by the wind.

A country is landlocked if it has no access to any oceans or seas. As an example, Austria is landlocked. France is not landlocked because it has access to the Mediterranean and the Atlantic Ocean. A sea is also landlocked if does not have access to an ocean. As an example, the Aral Sea is landlocked.

Convectional Rainfall occurs in Equatorial region. It occurs when the energy of the sun heats the surface of the Earth, causing water to evaporate to form water vapour. When the land heats up, it warms the air above it. This causes the air to expand and rise. As the air rises, it cools and condenses.

The Sun is the largest object in our solar system. It is composed of seven layers: three inner layers and four outer layers. The inner layers are the core, the radiative zone and the convection zone, while the outer layers are the photosphere, the chromosphere, the transition region and the corona.

Mulching, shelter belts and vegetative cover are some methods by which soil can be conserved in semi-arid and arid regions. The shelter belt is most effective in arid areas. Shelter belts are rows of trees, usually along fence lines.

El Nino is a warm ocean current. El Nino condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. The opposite condition is called La Nino.

Pluto is farthest from the Earth. Our Solar System has eight planets which orbit the sun. In order of distance from the sun they are; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto, which until recently was considered to be the farthest planet, is now classified as a dwarf planet.

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

Equatorial regions experience hot and humid climates because this region receives direct sunlight, water from the sea gets heated and is evaporated at a high rate. The moistures in the water vapours cause humidity.