Chapter 25, Problem 88A

Interpretation Introduction

Interpretation : The question is to find how the falling dominoes in the photograph can be used as a model for a chain reaction.

Concept Introduction: An unstable atomic nucleus loses energy by radiation during the process of radioactive decay. A substance is regarded as radioactive if it has unstable nuclei.

Answer to Problem 88A

When one event starts a string of related ones, the result is what is known as a domino effect or chain reaction and it is most commonly used to describe a mechanical phenomenon and is compared to a row of dominoes falling.

Explanation of Solution

• A tremendous quantity of energy is produced when an atom splits. The energy may be used to create electricity when it is released gradually and under control.
• The process of dividing a big atom into two or smaller ones is known as nuclear fission.
• Control rods are used in nuclear reactors to slow down reactions. Cadmium or boron make compose a control rod.
• These substances take up neutrons. The chain reaction is stopped by inserting the control rod in between the uranium atoms, which reduces the number of neutrons that may split other uranium atoms.

Conclusion

Hence, this is how the falling dominoes in the photograph can be used as a model for a chain reaction.