Multiple choice

Which one of the following conditions favours the highest amplitude of ocean tides?

  1. Conjunction-Perigee-Aphelion

  2. Conjunction-Perigee-Perihelion

  3. Opposition-Apogee-Aphelion

  4. Full moon-Apogee-Perihelion

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

Highest amplitude ocean tides, known as spring tides, occur when the gravitational pulls of the Sun and Moon reinforce each other during a conjunction (new moon) or opposition (full moon). Perigee (Moon closest to Earth) and Perihelion (Earth closest to the Sun) maximize this gravitational effect.