What was one of the main reasons lead was used extensively in the 20th century?

Lead Research and Environmental Impact

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Physics, Chemistry, Science, History
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9th - 12th Grade
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Hard

Lucas Foster
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It was a cheap material.
It was believed to be non-toxic.
It helped in improving engine performance.
It was a rare and valuable metal.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who was the scientist that revisited the idea of Earth as a cooling body in the 19th century?
Albert Einstein
William Thomson
Clair Patterson
Georges Louis Leclerc
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is carbon-14 not suitable for dating the age of the Earth?
It is not found in rocks.
Its half-life is too short.
It decays into a non-measurable element.
It is too abundant in the atmosphere.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the main challenge Patterson faced when using zircons for uranium-lead dating?
Zircons decayed too quickly.
Finding zircons with no uranium.
Contamination from external lead sources.
Zircons were too rare to find.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the significance of using meteorites in Patterson's research?
They were abundant and easy to find.
They were easier to date than zircons.
They provided a reliable age for Earth.
They contained no lead.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was one of the key factors that helped Patterson determine the age of the Earth?
The invention of the telescope.
The discovery of new isotopes.
The development of new mathematical models.
The use of a mass spectroscope.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Patterson discover about lead levels in remote regions like the Arctic?
They were unaffected by human activity.
They were the same as in urban areas.
They were 300 times higher than in the 1700s.
They were decreasing over time.
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