With the help of an activity show that sound
cannot travel through vacuum.

Explanation

### Step-by-Step Solution:

**Step 1: Understanding Sound Waves**
- Sound waves are mechanical waves, which means they require a medium (solid, liquid, or gas) to travel. They cannot propagate through a vacuum where there is no matter.

**Step 2: Concept of Vacuum**
- A vacuum is a space devoid of matter. For example, outer space, such as the Moon, is considered a vacuum because it has very few particles.

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