Rare Earths Quiz

May 2024
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Question 1

Why are rare-earth elements so valuable?

They have properties useful for high-tech industries.
They are more dense than gold.
They can mimic elements that are even more expensive.
Their properties can be altered according to industry needs.

Question 2

Why might rare-earth elements be called “green” elements?

They all glow green when exposed to x-rays.
They can be substituted for pesticides on organic farms.
Processing the ores requires only seawater.
They are used in hybrid cars and wind turbines.

Question 3

Which of the following is NOT a basic problem related to rare-earth elements?

Processing the elements damages the environment.
Almost all of the processing is controlled by China.
The elements are extremely rare and difficult to mine.
The elements are essential for a wide range of products.

Question 4

How does the phrase “scramble for Europe,” referring to China’s economic activity in Europe, reflect concern?

It portrays Europe as a mixture, or “scramble,” of economies.
It evokes fear that Europe is as vulnerable as Africa was in the 19th century.
It indicates that Europe’s relationship with China is confused.
It hints that China will use its African connections to ruin Europe.

Question 5

According to the graph on world production of rare-earth oxides, about when did Chinese large-scale production of such materials begin?

1980
1985
1990
1995

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