Why is it that when you turn on a heater and suck in the air coming out of it, it feels dry?
Hot air has a higher capacity for water. So if you heat up a volume of air the *relative* humidity goes down even though the absolute amount of water stays the same. Therefore the warm air can take up more moisture and that can come from your skin and other tissues, so you feel that it's drying you.
The Short Answer
Hot air has a higher capacity for water. So if you heat up a volume of air the *relative* humidity goes down even though the absolute amount of water stays the same. Therefore the warm air can take up more moisture and that can come from your skin and other tissues, so you feel that it's drying you.
Analysis
Key Concepts: Water, higher, capacity
This explanation focuses on water, higher, capacity and spans 58 words across 3 sentences. The depth is typical for Science questions (category average: 72 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “Hot air has a higher capacity for water.” It then elaboratesultimately building toward a complete picture across 3 connected points.
How This Compares in Science
Ranked #278 of 500 Science questions by answer depth (top 56%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.
Frequently Asked Questions
Is there a simple explanation for why it that when you turn on a heater and suck in the air coming out of it, it feels dry?
Hot air has a higher capacity for water. So if you heat up a volume of air the *relative* humidity goes down even though the absolute amount of water stays the same. Therefore the warm air can take up more moisture and that can come from your skin…
How detailed is this explanation compared to similar Science questions?
This is a focused answer at 58 words, ranked #278 of 500 Science questions by depth. The key concepts covered are water, higher, capacity.
What approach does this answer take to explain it that when you turn on a heater and suck in the air coming?
The explanation uses direct explanation across 58 words. It is categorized under Science and addresses the question through 1 analytical lens.