TASK DEFINITION: Given a scientific question, generate a correct answer to it.
PROBLEM: What works by providing a lower energy pathway from reactants to products?

SOLUTION: catalyst

PROBLEM: What is the general name for a wave that travels along the surface of a medium?

SOLUTION: surface wave

PROBLEM: What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts?

SOLUTION:
electromagnets