Why do we have two high tides a day?
The moon pulls on the ocean on the near side a bit more than it pulls on the Earth, raising the tide on the facing side. But it also pulls on the Earth a bit more than it pulls on the ocean on the far side, so it pulls the Earth away from the water on the far side as much as it pulls the water on…
The Short Answer
The moon pulls on the ocean on the near side a bit more than it pulls on the Earth, raising the tide on the facing side. But it also pulls on the Earth a bit more than it pulls on the ocean on the far side, so it pulls the Earth away from the water on the far side as much as it pulls the water on the near side away from the Earth. That raises a matching tide on the opposite side.
Analysis
Key Concepts: Pulls, side, earth
This explanation focuses on pulls, side, earth and spans 83 words across 3 sentences. The depth is typical for Nature questions (category average: 71 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “The moon pulls on the ocean on the near side a bit more than it pulls on the Earth, raising the tide on the facing side.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 3 connected points.
How This Compares in Nature
Ranked #182 of 500 Nature questions by answer depth (top 37%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why we have two high tides a day?
The moon pulls on the ocean on the near side a bit more than it pulls on the Earth, raising the tide on the facing side. But it also pulls on the Earth a bit more than it pulls on the ocean on the far side, so it pulls the Earth away from the water…
How detailed is this explanation compared to similar Nature questions?
This is an above-average answer at 83 words, ranked #182 of 500 Nature questions by depth. The key concepts covered are pulls, side, earth.
What approach does this answer take to explain we have two high tides a day?
The explanation uses contrasting perspectives across 83 words. It is categorized under Nature and addresses the question through 1 analytical lens.