Neutrons are found in the nucleus. Because their electric neutrality the are lik
ID: 3308573 • Letter: N
Question
Neutrons are found in the nucleus. Because their electric neutrality the are like "cement" facilitating the nuclear stability.
True
False
Gamma Rays consist of low energy photons
True
False
All kinds of radiations (X-Rays, Gamma-Rays, etc.) cause some damage to the living tissue. They are all equally harmful.
True
False
About one-sixth of our annual exposure to radiations comes from nonnatural sources, mainly medical procedures.
True
False
A radiation dosage of 500 REM is already lethal, a person may have a 50% chance of surviving this dose.
True
False
The nucleus consists of several nucleons (basically protons and neutrons) tied together by very strong forces.
True
False
Radioactivity is related to drastic changes that occur in:
outer regions of atoms
the atomic nucleus
atomic electrons
None of the above
Radioactivity was first discovered in Uranium, but later other substances as Thorium, Actinium, and Radium were found. These materials were thoroughly studied by:
Wilhelm Roentgen
Marie and Pierre Curie
Henri Becquerel
None of the above
outer regions of atoms
the atomic nucleus
atomic electrons
None of the above
Explanation / Answer
1. True.
Neutrons are found in the nucleus. They provide nuclear stability.
2. False
Gamma Rays consist of high energy photons.
3. False
Only X-Rays, Gamma-Rays and UV cause some damage to the living tissue. They are also not equally harmful.
4. True.
One-sixth to the population dose from background radiation which constitutes man-made radiation exposure.