Explain why tsunamis are so dangerous. How can scientists predict when tsunamis will reach land?

Explanation

### Step-by-Step Solution:

**Step 1: Understanding the Danger of Tsunamis**
- Tsunamis are dangerous primarily due to their immense wave height rather than their speed. While they can travel at high speeds across the ocean, it is the height of the waves that poses the greatest threat to life and property.

**Step 2: Wave Height**
- Tsunami waves can reach heights of 30 to 50 meters (approximately 100 to 165 feet). This is significantly higher than typical ocean waves and can easily overwhelm buildings, infrastructure, and coastal areas.

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