wunder beta

📘 How thunder is made

Learn how lightning heats air, launches pressure waves, and creates cracks, booms, and rumbles.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

A hot channel
Pressure wave
Light before sound
Rumble
Crack and boom
Branching
Atmospheric refraction
Storm distance
Recording
The complete event

Questions this course answers

What directly creates thunder?

The lightning channel heats air so quickly that it produces a pressure wave.

Why is lightning seen before thunder is heard?

The optical signal arrives nearly instantly while sound takes time.

Why can thunder rumble?

A long branched channel produces overlapping sound arrivals.

What does counting between flash and thunder estimate?

The delay reflects the time sound takes to travel from the flash.

What should you do when thunder is heard?

Thunder indicates nearby lightning and a need for shelter.

Grounded in trusted sources

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Every Wunder lesson is built from real, reputable sources — never invented.

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Wunder is a personalized learn-anything platform — tell it any topic and it builds a beautiful, fact-checked course in minutes, with narration, a knowledge check, and a college-style University track.

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