Why do lakes freeze but rivers don’t, in the same temperature?
Water in lakes is still, so it has time to freeze. Rivers are flowing, so water is constantly moving, making freezing much more difficult.
The Short Answer
Water in lakes is still, so it has time to freeze. Rivers are flowing, so water is constantly moving, making freezing much more difficult.
Analysis
Key Concepts: Water, lakes, time
This explanation focuses on water, lakes, time and spans 24 words across 2 sentences. At 66% below the average Nature explanation (71 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.
What This Answer Covers
This is a focused, single-point answer that gets directly to the core of the question without detours.
How This Compares in Nature
Ranked #444 of 500 Nature questions by answer depth (top 90%). This is a brief primer — the answer is intentionally short. For questions with a single core mechanism, brevity can actually be a strength.
Frequently Asked Questions
Is there a simple explanation for why lakes freeze but rivers don't, in the same temperature?
Water in lakes is still, so it has time to freeze. Rivers are flowing, so water is constantly moving, making freezing much more difficult.
How detailed is this explanation compared to similar Nature questions?
This is a brief answer at 24 words, ranked #444 of 500 Nature questions by depth. The key concepts covered are water, lakes, time.
What approach does this answer take to explain lakes freeze but rivers don't, in the same temperature?
The explanation uses direct explanation across 24 words. It is categorized under Nature and addresses the question through 1 analytical lens.