A. A type of rock found in the Earth's crust

B. One of 17 elements on the periodic table, including lanthanides, scandium, and yttrium

C. A common metal like copper or tin

D. A type of fossil fuel

A. They are found in large quantities in the Earth's crust

B. They are easy to extract and purify

C. They are crucial for building a lot of technology and are in high demand

D. They are used as a primary source of energy

Since they’re heavy, they require more power to use in devices.

Display screens on portable computers, televisions, computers, iPods, and iPhones use them.

They will likely be very useful for wind turbines and electric hybrid cars.

The Molycorp company mines and processes them.

A. They are found in very high concentrations

B. They are usually mixed with each other or other elements

C. They are located deep within the Earth's core

D. They are highly reactive with water

Chemical Reactions

Famous Scientists

Rare Earth Elements

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