Question

reading tide tables
when planning a trip to the seashore, it is important to be able to read the tide table in advance so you can make sure you dont arrive when the tide is high and the seashore is covered by the retreating ocean.

1. examine the following tide table for galway to practice reading a tide table.

a. what month is the tide tables for? _______________
b. if you wanted to go to the seashore on saturday the 4th what is the best time and what is the low tide? time: _____________ height of the low tide: _____________
remember: the low tide will be expressed as a small number, or possibly a negative number on tide tables. this number indicates the relationship between the water depth at its lowest ebb and chart datum.
c. can you find a low tide indicated by a negative number. what day and time is this?
date: _____________ time: ___________ tide: _____________
d. find the high tide information on saturday the 4th _______________
remember: a high tide will be expressed as a larger number. this number indicates how high above chart datum the tide will be at its greatest swell in metres.
e. if it rains on the 4th and you now have to chang the date to go to the seashore on the following saturday 11th april, what time is low tide? _______________
f. read the time. the time on the tide table is listed using a 24 hour clock. be certain that you have distinguished properly between morning and evening tide times. what time is high tide on the sunday 19th in the morning: _____________ and in the afternoon: _____________
galway - april 2020
g. explain the different symbols used on the tide table: clue: last quarter • full moon, new moon • first quarter

find out the tides in your area

1. what day this month is the best day and time to go to the seashore?

date: _____________ time: ___________ low tide: ___________ high tide: ___________ moon: _____________

Explanation:

Step1: Locate table header

The table is labeled Galway - April 2020, so the month is April 2020.

Step2: Find 4th April low tide

Locate row "04 Sat". The smallest number is 0.1m, paired with time 04:00.

Step3: Find negative low tide

Scan all rows for negative values. Row "05 Sun" has -0.1m at 05:00.

Step4: Find 4th April high tide

In row "04 Sat", the largest number is 4.1m, paired with time 10:10.

Step5: Find 11th April low tide

Locate row "11 Sat". The smallest number (0.2m) is paired with time 05:00.

Step6: Find 19th April high tides

Locate row "19 Sun". The large values are 4.0m (07:30, morning) and 4.2m (19:50, afternoon).

Step7: Match moon phase symbols

Use standard lunar phase symbols:

• Last Quarter: Left half shaded
• Full Moon: Full light circle
• First Quarter: Right half shaded
• New Moon: Full dark circle

Answer:

a. April 2020
b. Time: 04:00, Height of the Low tide: 0.1m
c. Date: 05 April, Time: 05:00, Tide: -0.1m
d. Time: 10:10, Height of the High tide: 4.1m
e. 05:00
f. Morning: 07:30, Afternoon: 19:50
g.

• Left half dark: Last Quarter
• Full circle: Full Moon
• Right half dark: First Quarter
• Full dark circle: New Moon