Multiple choice

Sea tides are caused by

  1. revolution of Earth

  2. rotation of Earth

  3. combined effects of gravitational forces exerted by moon, sun and rotation of Earth

  4. wind over the ocean

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tides are the rise and fall of sea level caused by the combined effects of gravitational forces exerted by the moon, sun and rotation of Earth.