13 / 20
What forms of radiation are typically faced at high altitudes, like those encountered during aviation and space exploration?
  • A
    Normal solar radiation and cosmic rays.
  • B
    Solar flares and man-made radiation.
  • C
    Normal solar radiation and man-made radiation.
  • D
    Cosmic rays and man-made radiation.

SOURCES OF RADIATION AT HEIGHT

Solar Radiation: Solar radiation originates from the Sun. It's a combination of various types of electromagnetic radiation, including visible light, ultraviolet (UV) radiation, X-rays, and gamma rays. The Sun is a massive nuclear fusion reactor that continuously emits energy into space. Solar radiation changes over a cycle of about 11 years.

Cosmic Rays: Cosmic rays are also referred to as Galactic Radiation. They are high-energy particles, primarily protons and atomic nuclei, that originate from outside our solar system. Their exact sources are still a subject of ongoing research, but they likely originate from supernovae, black holes, and other energetic astrophysical events. The amount of galactic radiation is relatively stable and predictable.


Man-made radiation: It also known as artificial radiation, refers to radiation that is produced by human activities or technology. This type of radiation is not naturally occurring and is a result of various human-made processes, devices, and materials. Man-made radiation includes both ionizing and non-ionizing radiation. For example, nuclear reactors, nuclear power plants, and radioactive materials used in industry and medicine can emit ionizing radiation. Man-made radiation might exist at high altitudes, but in very small amounts when compared with solar and cosmic radiation.

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.