Final answer:
An energy crisis occurs when there is a decrease in energy supply leading to an increase in energy prices, creating a scarcity of energy resources at higher costs.
Step-by-step explanation:
To trigger an energy crisis in society, two primary events must occur: a decrease in energy supply and an increase in energy prices. This scenario is reflective of an imbalance between supply and demand where a decrease in the supply of energy resources, often due to disruptions such as oil pumping issues, leads to a movement up the demand curve. Consequently, the equilibrium price of these resources increases while the equilibrium quantity available decreases, creating a crisis situation where energy becomes scarce and expensive.