<p> ML5-PRAC_TideSpeed.docx 21NOV2013 </p><p>Speed of the rising tide</p><p>Background: The graph below shows how the height of the tides in Penobscot Bay changes over the course of two days. Measurements were made every six minutes at a tide gauge in Rockland on April 15 and 16, 2012. </p><p>Question: In what places along the line graph does the tide rise the fastest?</p><p>1. Why is a line graph a good choice to show evidence to answer this question? </p><p> a. Because the graph shows how the tide height changes over the two days. b. Because the graph compares two numbers: the average height of high tide with the average height of low tide c. Because the graph shows how tide height and water temperature are correlated d. A line graph was a poor choice to answer this question</p><p>Please explain your reasoning.</p><p>2. Based on the evidence in the graph, how would you answer the question, When does the tide rise at the fastest speed?</p><p>Data file: DL_Tides and moon phases (Aug-Oct 2012)</p>