Nuclear Fallout

Nuclear fallout, also known as Black Rain, is the result of a nuclear blast or reaction. It is called a "fallout" because of the radioactive material that falls out of the sky after the explosion and shock wave have passed.

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It refers to the radioactive dust and ash created when a nuclear weapon explodes, but this dust can also be originated in a damaged nuclear plant. The dust consists of material either vaporized by a nuclear blast or charged by exposure is a highly dangerous kind of radioactive contamination.

Nuclear Radiation was also once believed that radiation would drastically effect aquatic animals such as fish. There have been a number of experiments done on this. All have shown little effect of radiation on fish. Only in extreme cases where fish were exposed to 11 rems a day was there any evidence of mutations and life shortening.

Below 100 rems
No obvious sickness occurs.
100-200 rems
Mild symptoms occur. Blood tissues are affected. Mild nausea and vomiting might occur. Loss of appetite, fatigue might last up to 4 weeks.
200-400 rems
Illness becomes increasingly severe, and significant mortality sets in. Initial symptoms occur 1-6 hours and last 1-2 days. Increase in nausea and vomiting at 280 rems. Initial symptoms might include hair loss, fatigue, hemorrhage of the mouth and kidney. Susceptibility to infection is serious. At 300 rems the possibility of death without treatment increases to 10%.
400-600 rems
Mortality rises from around 50% at 450 rems to 90% at 600 unless there is medical intervention. The symptoms for 200-400 rems increase in severity reaching 100% occurrence at 600 rems. Death occurs usually 2-12 weeks after exposure and results from infection and hemorrhage. Recovery takes several months to a year, blood cell counts may take even longer to return to normal.
600-1000 rems
Survival depends on if you go to the hospital. Bone marrow is almost completely destroyed and will require a transfusion. Death usually follows 1-4 weeks from infection and internal bleeding. The recovery might never completely happen and if it does it will take years.
Above 1000 rems
Above 1000 will cause severe problems which include severe diarrhea, intestinal bleeding, and loss of fluids. Death will follow in a few hours from circulatory collapse.
1000-5000 rems
After the initial severe nausea a period of apparent well-being will last a few hours to a few days often called the "walking ghost phase." In rapid succession prostration, diarrhea, anorexia, and fever follow. Death is certain, often preceded by delirium and coma. Medical treatment is only capable of relieving suffering.
Above 5000 rems
Immediate disorientation and coma will result within seconds to minutes. Convulsions may be controlled with sedation. Victim may linger for up to 48 hours before dying.
The average human receives 360 millirems (.360 rems) a year of radiation from naturally occurring isotopes.
Radiation has other effects. It can cause mutations. These mutations can either be somatic or genetic mutations. Radiation also has long term effects on human health. It has been linked to leukemia, bone, lung, and breast cancer.


1.) What is another term for nuclear fallout?
A. Dust
B. Black Rain
C. Black Snow
D. Clouds

2.) How much radiation do you receive from naturally occurring isotopes?

3.) How long does the walking ghost phase last?