The Science of Lightning | National Geographic

Where do the greatest concentrations of lightning strikes occur worldwide?

• North America, Europe, and Australia.

• Central Africa, the Himalayas, and South America.

• East Asia, Russia, and Canada.

• The Arctic, Antarctica, and deserts.

What happens to the particles within a thundercloud to create lightning?

• All particles become positively charged and repel each other.

• Lighter particles become positively charged at the top, and heavier particles become negatively charged at the bottom.

• All particles become negatively charged and attract each other.

• Particles remain neutral until they hit the ground.

What causes the booming sound of thunder?

• The collision of clouds.

• The rapid expansion of air due to extreme heat from lightning.

• The sound of rain hitting the ground.

• The friction between air particles.

What is a recommended safety measure during an electrical storm if caught in the open?

• Stand under the tallest tree for protection.

• Seek shelter inside a building or hard-topped automobile.

• Lie flat on the ground in an open field.

• Continue playing sports as usual.