Final answer:
Active corrosion is indeed a process that is ongoing or not controlled and is typically prevented using methods like galvanization or cathodic protection. The statement is true.
Step-by-step explanation:
The statement active corrosion is corrosion that is continuing or not arrested is true. Corrosion refers to the degradation of metals due to electrochemical processes. Common forms of corrosion include rust on iron, tarnish on silver, and the development of a blue-green patina on copper. This process involves a galvanic cell where part of the metal acts as an anode, where corrosion occurs, and part as a cathode. To prevent corrosion, methods like galvanization, which involves coating the metal with zinc, and the use of sacrificial anodes in cathodic protection are employed. The financial impact of corrosion is substantial, highlighting the importance of understanding and preventing it. The assertion made is accurate because active corrosion implies an ongoing process that has not been stopped or controlled.