Why is sand used for extinguishing fire?

Explanation

**Step-by-Step Solution:**

1. **Understanding Fire**: Fire requires three essential components to exist: fuel (combustible material), heat, and oxygen. This is often referred to as the "fire triangle."

2. **Role of Sand**: When sand is thrown on a fire, it serves a specific purpose. Sand is not flammable and does not produce heat, making it an effective material for extinguishing fire.

3. **Creating a Barrier**: The primary action of sand is to create a physical barrier. When sand is poured over a fire, it covers the combustible materials and the flames.

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