Home » General Knowledge » World Geography

Upper atmosphere (ionosphere coverage): Which layers of the atmosphere are included within the ionosphere? Recognise that the ionosphere overlaps multiple high-altitude layers due to solar ionisation. Choose the most comprehensive option.

Q: Upper atmosphere (ionosphere coverage): Which layers of the atmosphere are included within the ionosphere? Recognise that the ionosphere overlaps multiple high-altitude layers due to solar ionisation. Choose the most comprehensive option.

Concept The ionosphere is not a separate discrete layer; it is a region of ionised particles that overlaps mainly the thermosphere, extends upward into the exosphere, and reaches down into the upper mesosphere (D layer).

Difficulty: Easy

Mesosphere
Thermosphere
Thermosphere and exosphere
Thermosphere, exosphere and mesosphere

Correct Answer: Thermosphere, exosphere and mesosphere

Explanation:

Concept
The ionosphere is not a separate discrete layer; it is a region of ionised particles that overlaps mainly the thermosphere, extends upward into the exosphere, and reaches down into the upper mesosphere (D layer).

← Previous Question Next Question→

More Questions from World Geography

Mineralogy (classification): Minerals that chemically contain hydrocarbons belong to which group? Differentiate organic-bearing minerals from silicates/oxides/hydrides. Choose the correct group.
Soil science (shrink–swell clays): The heavy clay soils that show marked expansion when wet and contraction when dry are called what? Note: 'heavy day soils' in the prompt refers to heavy clay soils (typo clarified). Choose the correct soil order.
Oceanography (seafloor mapping): Our knowledge of ocean-basin topography has been obtained using which method(s)? Consider geophysical and acoustic techniques used to map the seabed. Choose the correct option.
Fisheries (global trade): Which region is the largest fish exporting region in the world among the choices given? Focus on export volumes rather than just capture production by FAO area. Choose the correct region.
Deserts (location): Where is the Great Victoria Desert located? Identify the correct continent/country for this major desert. Choose the correct option.
Global circulation (land–sea distribution effects): The positions of continents and oceans influence which atmospheric features most directly? Evaluate impacts on pressure-belt formation and mid-latitude cyclone development. Choose the correct statement.
Map projections (cartography): The Homolographic projection preserves which geographic property most accurately? Remember that 'homolographic' is another name for equal-area types of projections. Choose the correctly represented property.
Global pressure belts and latitude: The latitudinal differences in atmospheric pressure delineate several major pressure zones. These pressure zones most closely correspond with which broad Earth patterns? Choose the option that best matches the correspondence.
Indian minerals (Bailadila): The iron ore mined at the Bailadila range (Chhattisgarh) predominantly consists of which ore type? Refer to the high-grade, steel-making ore associated with the region's deposits. Choose the correct ore.
Astronomy of time (tropical year): The length of the tropical year (interval between successive spring equinoxes) is decreasing very slowly. This slow decrease primarily results from which long-term changes in Earth's motions? Choose the most accurate cause.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion