Why radiation is harmful

• What are the two terms discussed in the video regarding radiation?

  Irradiation and contamination
• What is irradiation?

  Irradiation is the process by which an object is exposed to radiation.
• What types of radiation can cause irradiation?

  Both ionizing radiation like alpha particles and non-ionizing radiation like ultraviolet can cause irradiation.
• What is contamination in the context of radiation?

  Contamination is when radioactive particles get onto other objects.
• Why is contamination a concern?

  The concern is that the radioactive material may decay and irradiate you.
• What factors determine how harmful radiation is?

  The type of radiation, the location of exposure, and the amount of radiation received determine its harmfulness.
• Which type of radiation is generally considered the most dangerous?

  Ionizing radiation is generally considered the most dangerous.
• How can ionizing radiation affect DNA?

  Ionizing radiation can ionize DNA, causing mutations that may lead to cancer.
• What type of radiation can also lead to cancer, despite not always being considered ionizing?

  Ultraviolet radiation can also lead to cancer.
• What is the order of radiation types from most harmful to least harmful?

  • Alpha particles (most harmful)
  • Beta particles
  • Gamma rays
  • X-rays
  • Ultraviolet radiation
  • Microwave radiation
  • Radio waves (least harmful)
• How does the location of the radiation source affect its harmfulness?

  If the source is outside the body, alpha radiation is less harmful, while beta and gamma radiation are more dangerous.
• Why is alpha radiation more dangerous if the source is inside the body?

  Alpha radiation is more dangerous inside the body because it can penetrate cells directly.
• What factors influence the dosage of radiation exposure?

  The dosage depends on the distance from the source, the duration of exposure, and the radioactivity of the substance.
• What precautions should be taken to minimize irradiation and avoid contamination?

  • Wear protective gear like gloves and overalls
  • Use tools like tongs to handle radioactive items
  • Keep radioactive items in lead-lined boxes
• Can being irradiated cause someone to mutate into a mutant?

  No, being irradiated cannot cause you to mutate into a mutant.
• Can a person who has been irradiated emit radiation to others?

  No, a person who has been irradiated cannot emit radiation to others unless they are contaminated.
• What is the difference between irradiation and contamination?

  • Irradiation: Exposure to radiation
  • Contamination: Presence of radioactive particles on objects