Sciomi uses Google Analytics to measure how the site is used. If you accept, it stores a cookie on your device. If you decline, it stores nothing on your device, but Google may still receive a basic signal that a page was opened. Sign-in and practice progress cookies are always used. No ads are shown. Details in the privacy policy

Tides (causes, calculations)

Geography · Physical geography — water

Loading practice question…

About this practice set

Tides (causes, calculations) is part of Geography (Physical geography — water). Questions are generated with new numbers each time you practise. Levels available: Easy. After you answer, an explanation is shown.

Example questions

A taste of what you will practise. Answers are revealed after you try.

  • Easy

    The high-tide level is 2 m above mean sea level. Approximating the tide with a cosine, what is the height 3 hours after high tide? Use height = range × cos(2π × t / 12) with t in hours.