How is hale described when he comes to salem

Consider the last two lines of the poem again. why do you think the old woman sees herself as a terrible fish? why did she choose to compare her to a fish? why do you think she chose to use the word "terrible"? write your answer in two hundred words.

In hard times by charles dickens, mr. gradgrind’s name can be interpreted in several ways. the selection supports all of the following interpretations except he grinds out graduates who are similar to each other as if he were running a factory he grinds the importance of facts into students’ heads he grinds down children by crushing their imaginations he grinds his teeth together, suggesting his intolerance for fantasy

How does this image the reader to understand seismographs?