The Science Quiz | Surviving radiation

Fragments of an explosive gadget, a radiation warning signal within the foreground, are displayed by Ukrainian authorities after a drone assault on the former Chernobyl nuclear energy plant, Ukraine, Friday, February 14, 2025.
| Photograph Credit score: AP

Questions:

1. There are 4 methods to measure radiation dose. Of those, grey and X measure the absorbed dose whereas sievert and Y measure it when it comes to its organic impact. Identify X and Y, that are the corresponding non-SI items in these classes.

2. About 0.4 micro-sievert is the quantity of radiation your physique is uncovered to each hour. What’s the collective title for the supply of this radiation?

3. Identify town in southeast China that’s reputed for an space with a very excessive degree of radiation — about 6.4 milli-sievert per 12 months — on account of rocks within the space being significantly wealthy in uranium and thorium.

4. For people to be killed by radiation poisoning, the worth of the ____ is 4,800 milli-sievert. Fill within the clean with a unit that denotes the quantity of a substance required to kill half the members of a inhabitants.

5. Identify the micro organism famed for being probably the most radiation-tolerant organism recognized in existence. It might probably stand up to as much as 30,000 grey of gamma rays — 6,000-times greater than the dose that might kill a human.

Visible:

Identify this Canadian chemist of the Manhattan Venture who died in Might 1946 after unintentionally, and infamously, setting off a fission response in shut quarters and receiving a radiation dose of 21,000 sievert.

Solutions:

1. Rad and rem

2. Pure background radiation

3. Yangjiang

4. LD50

5. Thermococcus gammatolerans

Visible: Louis Slotin