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Wind Wave? Basic

How winds form ocean waves.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Wind Wave? At grade

How winds form ocean waves.

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Wind Powe? Basic

How wind can be used to generate power, and its consequences.

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Wind Powe? At grade

How wind can be used to generate power, and its consequences.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Why Isn't Olympus Mons on Earth? Basic

Earth has limits on the size of mountains it can support.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Why is the Sky Blue (or Red)? Basic

Refraction is the reason the sky is blue or red at sunrise and sunset. Refraction is explained.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged ...

Whose Best Friend Are They? Basic

The quality of synthetic diamonds has improved so much they are hard to tell from real diamonds.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logge ...

Which is the Tallest Mountain? Basic

Deciding which mountain is the tallest is not as straightforward as it appears.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Where is the Hottest Place on Earth? Basic

The hottest temperature ever recorded at a meteorological stations is not the hottest temperature Earth's surface has known.

It is an educational content of CK-12 Foundation (to access some of the CK-1 ...

Where is Everyone? At grade

If there was intelligent life somewhere near us in our galaxy, we might expect to be able to sense it. Learn why scientists think that so far the Milky Way is silent.

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