Final answer:
Three factors that can cause scatter radiation to increase are increased temperature, increased surface area, and sources from space and atmosphere.
Step-by-step explanation:
Scatter radiation can increase due to three main factors:
- Increased temperature: The radiation rate is directly proportional to the fourth power of the absolute temperature. This means that as the temperature increases, the amount of scatter radiation also increases.
- Increased surface area: The radiated heat is proportional to the surface area of an object. When the surface area increases, such as when you knock apart coals of a fire, the amount of scatter radiation also increases.
- Sources from space and atmosphere: Sources such as cosmic rays and radioactive gases in the atmosphere can contribute to an increase in scatter radiation.