RBMK reactors are inherently safe because their graphite moderator gets smaller with increasing temperature
What will be an ideal response?
The decrease in size of the moderator is a problem known as positive void
coefficient. The material itself gets bigger, but so do the holes inside, so fewer neutrons are
caught. It will interact with fewer neutrons, thus leaving more of them to react, making the
reactor hotter, making more neutrons to react, etc. This is not good.
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A ball, solid cylinder, and a hollow pipe all have equal masses and radii. If the three are released simultaneously at the top of an inclined plane, which will reach the bottom first?
A) ball B) pipe C) cylinder D) they all reach bottom in the same time
The current sunspot cycle is the most active in a century
Indicate whether the statement is true or false
All the gamma-ray bursters measured to date have distances of millions or even billions of light-years
Indicate whether the statement is true or false
A nuclear reactor could explode like an atomic bomb
Indicate whether the statement is true or false