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What is Plasma? Basic

Plasma is the 4th state of matter. This ionized gas makes up stars and is used for products on earth such as neon lights and plasma TVs.

It is an educational content of CK-12 Foundation (to access som ...

What if Earth Were Hollow? Basic

What would happen to gravity and Coriolis Effect if you tried to dig a hole through the center of the Earth.

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

What Formed This Crater? Basic

Evidence that Barringer Crater was formed by a meteorite impact includes high pressure minerals, overturned sedimentary rock layers, rock debris and fragments of the meteorite.

It is an educational con ...

What Does Sophie Sense? Basic

A dog sense the P-waves that arrive before the damaing S-waves during an earthquake. Early earthquake detection devices do the same thing.

It is an educational content of CK-12 Foundation (to access so ...

What Apollo Astronauts Sa? At grade

Find out what Apollo astronauts saw on the moon, how scientists have developed hypotheses to explain them, and how they plan to test these hypotheses.

It is an educational content of CK-12 Foundation ( ...

Wegener and the Continental Drift Hypothesi? Basic

How Wegener's hypothesis of continetal drift was refined.

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

Wegener and the Continental Drift Hypothesi? At grade

How Wegener's hypothesis of continetal drift was refined.

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

Weathering and Erosio? Basic

Solid rock is worn down through weathering.

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Weathering and Erosio? At grade

Solid rock is worn down through weathering.

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

Weather versus Climat? Basic

Compares and contrasts weather and climate.

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

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