Why Radiation is Harmful

• What are the two main terms discussed in the video?

  Irradiation and contamination
• What is irradiation?

  Exposure of an object to radiation
• What types of radiation can cause irradiation?

  Ionizing and non-ionizing radiation
• What are examples of ionizing radiation?

  Alpha particles, beta particles, gamma rays, x-rays
• What is contamination?

  Radioactive particles on other objects
• Why is contamination a concern?

  It increases the risk of irradiation
• What determines how harmful radiation is?

  Type of radiation, exposure location, dosage
• Which type of radiation is generally the most dangerous?

  Ionizing radiation
• How can ionizing radiation affect DNA?

  It can cause mutations
• What can uncontrolled cell division lead to?

  Development of cancer
• Can ultraviolet radiation lead to cancer?

  Yes, even if not ionizing
• 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
  • Microwaves
  • Radio waves (least harmful)
• How does the location of the radiation source affect its harm?

  Alpha radiation is less harmful outside the body
• What happens if alpha radiation is inside the body?

  It becomes the most dangerous
• What factors determine the dosage of radiation exposure?

  Distance, exposure time, radioactivity
• What precautions should be taken around radioactive sources?

  Wear protective gear and use tools
• Can being irradiated cause mutations in a person?

  No, it cannot cause mutations
• What can make a person radioactive?

  Carrying a radioactive source
• What are the key points to remember about irradiation and contamination?

  • Irradiation is exposure to radiation.
  • Contamination is radioactive particles on objects.
  • Ionizing radiation is more harmful.
  • Alpha radiation is dangerous if inside the body.
  • Precautions include protective gear and tools.