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It's Okay to Be Smart: The Strange (Unexpected) Reason Ice Is Slippery

7 minutes 22 seconds

Now Playing As: Captioned (English) (change)

The freezing and melting of water affects so much of the world. Ice crystals in thunderclouds create lightning. It is also powerful enough to crack boulders, float stones, and alter entire landscapes. Ice is a common substance, but it has some secrets and weird properties scientists have only just begun to understand. Part of the "It's Okay to Be Smart" series.

Media Details

Runtime: 7 minutes 22 seconds

Topic: Science
Subtopic: Chemistry, Physics, Science Methods
Grade/Interest Level: 9 - 12
Standards:

Release Year: 2019
Producer/Distributor: PBS Digital Studios
Series: It's Okay to Be Smart

Many hot air balloons taking off into the sky.

Still image from: It's Okay to Be Smart: The Most Extreme Life Forms on Earth…And Beyond?

Different math equations and graphs are drawn, with a butterfly as the backdrop.

Sixteen eyeballs, each with different eye color. Caption: Martin-Schultz scale.

A group of animals, a gorilla, a rhino, a lemur cat, and a scaled lizard.

Seven different butterflies, where four are placed at the corners facing the butterfly at the center and two at either side of the central butterfly.

An animal with the body of a lion, an extra goat head on its back, and a snake instead of a tail. Caption: Chimera.

A view of Moon in the dark sky. Caption: Maria, Latin for seas, and Sea of Tranquility, Mare Tranquillitatis.

A star filled night sky. Caption: P B S.

Sunlight is shining through in a forest with large number of trees.