Tsunamis: warning signs and wave behavior

What you’ll learn about tsunamis

Tsunamis aren’t just “big waves”—they’re long-wavelength surges that behave differently as they approach shallow water. This quiz focuses on real-world warning signs, wave timing, and what coastal geography can change about impact.

Expect a mix of practical safety knowledge and basic science, from earthquake clues to why the first wave may not be the largest.

Quiz format and difficulty settings

Each question has 4 options and there’s no timer, so you can think through scenarios instead of rushing. Choose your question count and difficulty before you start; the Mixed setting blends easier recognition questions with tougher wave-behavior and interpretation items.

Common pitfalls to avoid

Many people assume tsunamis look like a single towering breaker, or that danger ends after one wave. This quiz highlights the mistakes that lead to delayed evacuation, unsafe shoreline watching, and misunderstanding official alerts.

• Confusing tsunami surges with normal storm waves or tides
• Assuming the first wave is always the largest or the last
• Ignoring rapid sea drawdown or unusual roaring sounds
• Waiting for an official warning when natural signs are present
• Underestimating strong currents in harbors, rivers, and channels

How the challenge stays balanced

Difficulty is balanced by mixing quick “spot the sign” questions with deeper items about wave trains, arrival intervals, and coastal effects. You’ll see repeated core ideas in new contexts so you practice recall, not memorization.