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- Physical Geography Important Questions
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- Question 1 of 22
Depression formed due to deflating action of winds are called:
A yardang is a streamlined protuberance carved from bedrock or any consolidated or semiconsolidated material by the dual action of wind abrasion by dust and sand, and deflation which is the removal of loose material by wind turbulence.
- Question 2 of 22
The land of maximum biodiversity is:
Tropical land has maximum biodiversity because rainforests located in tropical regions receive a lot of sunlight. Since there is a lot of sunlight, there is a lot of energy in the rainforest. This energy is stored in plant vegetation, which is eaten by animals. The abundance of energy supports an abundance of plant and animal species.
- Question 3 of 22
Which is the second nearest star to the Earth after the Sun?
Proxima Centauri is about 4.22 light-years from Earth and is the closest star other than the sun. Even though Proxima Centauri is the closest star to the Sun, it is not visible to the unaided eye from Earth because of its low luminosity.
- Question 4 of 22
The age of the Earth can be determined by:
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.
- Question 5 of 22
Which one of the following is the highest cloud?
The different types of clouds are cumulus, cirrus, stratus and nimbus. Cirrus clouds are short, detached, hair-like clouds found at high altitudes. These delicate clouds are wispy, with a silky sheen, or look like tufts of hair.
- Question 6 of 22
Troposphere is the hottest part of the atmosphere because:
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.
- Question 7 of 22
The outermost layer of the Sun is called:
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.
- Question 8 of 22
The largest ecosystem of the Earth is:
A biome is a large geographical area that contains distinct plant and animal groups which are adapted to live in that environment. They are the interactions between biota, such as plants and animals, within the environment, and many ecosystems can make up a single biome.
- Question 9 of 22
Which one of the following minerals is found in Monazite sand?
Thorium occurs in the minerals thorite, thorianite, orangite, and yttrocrasite, and in monazite sand. Thorium content of monazite is variable and sometimes can be up to 20–30%.
- Question 10 of 22
How much of the Earth’s land surface is desert?
The Earth is covered with 71% of water and remaining 29% is land. Deserts make up about 33% or 1/3rd of earth’s land area.
- Question 11 of 22
The lowest layer of the atmosphere is:
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.
- Question 12 of 22
Sea breeze is formed during:
Sea breeze, a local wind system characterized by a flow from sea to land during the day. It develops due to differences in air pressure created by the differing heat capacities of water and dry land.
- Question 13 of 22
What percentage of world’s freshwater is stored as glacial ice?
About 2.1% of all of Earth’s water is frozen in glaciers. About 70% of Earth’s freshwater is stored in glaciers.
- Question 14 of 22
Which is the most stable ecosystem?
The ocean is the most stable ecosystem. It is stable due to its natural liquid nature (saline), dissolved oxygen, light and temperature.
- Question 15 of 22
The coral reefs are the marine counterparts of:
Coral reefs are often called the “tropical rainforests of the sea” for their astounding richness of life. It is an underwater ecosystem characterized by reef-building corals. Due to their structural complexity, corals are one of the most productive ecosystems on Earth, providing important services to mankind including fisheries, coastal protection, medicines, recreation, and tourism.
- Question 16 of 22
The approximate circumference of the Earth is:
The equatorial circumference of Earth is about 40,075 km. However, the meridional circumference (from pole to pole) is about 40,008 km.
- Question 17 of 22
The iron ore which contains 72% of iron is:
Pure magnetite contains 72.4 percent iron, hematite 69.9 percent, limonite 59.8 percent, and siderite 48.2 percent, but, since these minerals never occur alone, the metal content of real ores is lower.
- Question 18 of 22
Tsunamis are waves generated by:
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean.
- Question 19 of 22
Ethnic group Mongoloids are found in India in:
Mongoloids people are concentrated in the nearby areas of the Himalayas, e.g. Ladakh, Sikkim, Arunachal Pradesh and other areas of the north-eastern India.
- Question 20 of 22
The zone of Earth’s atmosphere immediately above its surface up to a height of about 16 kms above equator and 8 kms over the poles is known as:
The troposphere starts at the Earth’s surface and extends 8 to 16 kilometers.
- Question 21 of 22
The moon is showing its same face to the earth because:
- Question 22 of 22
The ‘Pacific Ring of Fire’ is associated with:
The Pacific Ring of Fire is a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur.