TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: When the energy of the earthquake reaches shore, it forms a huge wave called a tsunami.

SOLUTION: When the energy of the earthquake reaches shore, it forms a huge wave called?

PROBLEM: Changing the shape of an elastic material gives it potential energy.

SOLUTION: Changing the shape of an elastic material gives it what type of energy?

PROBLEM: A negative enthalpy change is observed in an exothermic reaction.

SOLUTION:
What enthalpy change is observed in an exothermic reaction?