On 6 June 1983, at 1719 EST (ZD +5), what...

🔍 Key Concepts

• Use the Tide Tables for 1983 and find the reference station for the Delaware River covering Chester, PA • Apply the time and height corrections for the subordinate (secondary) station based on the reference station (Philadelphia) • Convert EST (ZD +5) correctly to the standard times shown in the tide tables, paying close attention to date and daylight saving

💭 Think About

• What is the proper reference (primary) station for Chester, PA in the tide tables, and what are the predicted high and low waters there on 6 June 1983? • How do you apply the time differences and height ratios from the subordinate station table to adjust the primary station’s high or low tide for Chester? • At 1719 EST, are you closer in time to the preceding high/low tide or the following one, and how does that affect the interpolation of height?

✅ Before You Answer

• Confirm you are using 6 June 1983 (not 5 or 7 June) and the correct time zone for the table (standard vs daylight). • Verify you correctly identify which tide (high or low) you are interpolating between for 1719 EST at Chester. • Double-check the height correction: multiply by the correct ratio and add/subtract any stated constant before comparing to the multiple-choice options.

On 6 June 1983, at 1719 EST (ZD +5), what will be the predicted height of tide at Chester, PA?

0.8 feet( 0.2 meters)

1.1 feet (0.3 meters)

3.5 feet (1.1 meters)

4.7 feet (1.4 meters)

🔍 Key Concepts

💭 Think About

✅ Before You Answer