🔍 Key Concepts

• Use the Tide Tables for City Island, NY for 4 March 1983 to find the high and low waters surrounding 1000 EST • Determine whether the tide at 1000 is on the flood (rising) or ebb (falling) between those two tides • Use proportional interpolation (graph or table) between the known heights and times to find when the height will be 2.4 feet

💭 Think About

• Which two consecutive high/low water events on 4 March 1983 bracket 1000, and what are their times and heights? • At 1000, is the actual predicted height already above or below 2.4 feet, and is the tide moving toward or away from that value? • When you set up the time–height proportion between the two known tide points, where does 2.4 feet fall as a fraction of the total height change, and what does that fraction of the time interval equal in minutes?

✅ Before You Answer

• Confirm you are using standard time (EST) as shown in the Tide Tables for City Island, not converting to GMT • Write down the exact times and heights of the two surrounding tides before doing any math • Double‑check your ratio setup: (\frac{\text{height change to 2.4}}{\text{total height change}} = \frac{\text{time from known tide}}{\text{total time interval}}) and ensure the time you compute is after 1000 for all choices