Radiation in Space
Physics ⇒ Earth and Space Physics
Radiation in Space starts at 9 and continues till grade 12.
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Describe one method used to protect astronauts from radiation during space missions.
Describe the difference between ionizing and non-ionizing radiation in the context of space.
Describe the role of the ozone layer in protecting life on Earth from space radiation.
Explain why radio waves can travel through space but sound waves cannot.
Explain why spacecraft electronics must be shielded from radiation in space.
Explain why the International Space Station (ISS) orbits below the inner Van Allen belt.
A satellite in low Earth orbit is exposed to a radiation dose of 0.5 mSv per day. How much radiation will it accumulate in 30 days?
A solar flare increases the intensity of X-rays reaching a satellite by a factor of 10. If the normal intensity is 2 W/m2, what is the new intensity?
Which layer of Earth's atmosphere absorbs most of the Sun's harmful ultraviolet radiation?
(1) Troposphere
(2) Stratosphere
(3) Mesosphere
(4) Thermosphere
Which of the following best describes cosmic background radiation?
(1) Radiation from the Sun
(2) Remnant radiation from the Big Bang
(3) Radiation from nuclear decay
(4) Radiation from supernovae
Which of the following best explains why astronauts need protection from radiation in space?
(1) There is no gravity in space
(2) The Earth's magnetic field does not extend far enough to protect them
(3) Space is too cold
(4) There is no oxygen in space
Which of the following is a source of natural background radiation on Earth?
(1) Cosmic rays
(2) Nuclear power plants
(3) Medical X-rays
(4) Cell phones
Fill in the blank: The cosmic microwave background radiation has a temperature of about __________ K.
Fill in the blank: The most energetic form of electromagnetic radiation is __________.
Fill in the blank: The process by which an atom loses an electron due to high-energy radiation is called __________.
Fill in the blank: The process by which high-energy particles from space interact with Earth's atmosphere to produce secondary particles is called __________.
True or False: All forms of space radiation are harmful to humans.
True or False: Cosmic rays are composed mainly of protons and atomic nuclei.
True or False: Gamma rays can penetrate most materials more easily than visible light.
True or False: The Earth's atmosphere blocks all forms of cosmic radiation from reaching the surface.
