ARTi
What is the name of the invisible, downward-moving stream of electrons that initiates a lightning strike?

The lightning capital of the United States

Chapter 1

The battle for the crown

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Answer

Chapter 2

The physics of a flash

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Answer

Chapter 3

Tracking the flash

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Chapter 4

Thunder, heat, and safety

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YOUR GOAL

Master of The lightning capital of the United States

Ch 2 · The physics of a flash
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Tiny Thunder
BETA

futura Tiny Thunder

Jul 21

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futura The explosive return stroke

Jul 21

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futura How a cloud becomes a battery

Jul 21

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futura In-cloud versus cloud-to-ground strikes

Jul 21

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futura The invisible path of the step leader

Jul 21

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futura Florida's Lightning Capital

Two sea breezes collide and the frozen clouds spark

Jul 21

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The explosive return stroke

futura The explosive return stroke

Jul 21

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Fun Fact

Superheated air: A single bolt of lightning can heat the air around it to 50,000 degrees Fahrenheit, which is five times hotter than the surface of the Sun.

Jul 21

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The invisible path of the step leader

futura The invisible path of the step leader

Jul 21

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Quiz

How hot can a lightning bolt heat the surrounding air, measured in Fahrenheit?

Jul 21

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Gossip

Which part of a lightning strike sounds the most scientifically mind-blowing to you?

Jul 21

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Quiz

What part of a storm cloud typically carries a strong negative electrical charge?

Jul 21

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Quiz

What physical process inside a storm cloud causes the separation of electrical charges?

Jul 21

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Quiz

Which part of a lightning strike is the brilliant, visible flash that we actually see?

Jul 21

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Quiz

What is the name of the invisible, downward-moving stream of electrons that initiates a lightning strike?

Jul 21

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Quiz

Approximately what percentage of global lightning is in-cloud lightning that never touches the ground?

Jul 21

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Quiz

What upward-reaching electrical charge from the ground meets the downward step leader to complete the lightning circuit?

Jul 21

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Quiz

How fast does the initial step leader travel as it moves down from the cloud?

Jul 21