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Questions and Answers
What is the most abundant element in Earth's crust?
What is the most abundant element in Earth's crust?
- Carbon
- Silicon
- Aluminum
- Oxygen (correct)
What is formed when oxygen and silicon combine?
What is formed when oxygen and silicon combine?
- Sand
- Granite
- Silica (correct)
- Quartz
What is the main component of rocks in Earth's crust?
What is the main component of rocks in Earth's crust?
- Granite
- Sandstone
- Silica (correct)
- Basalt
Why do silicon and oxygen commonly occur together?
Why do silicon and oxygen commonly occur together?
What is the primary reason silica is so abundant in Earth's crust?
What is the primary reason silica is so abundant in Earth's crust?
What percentage of the atmosphere's gas is found in the troposphere?
What percentage of the atmosphere's gas is found in the troposphere?
Where do we focus on studying the abundance of elements in the atmosphere?
Where do we focus on studying the abundance of elements in the atmosphere?
What is the characteristic of the troposphere regarding the atmosphere's gas?
What is the characteristic of the troposphere regarding the atmosphere's gas?
What layer of the atmosphere is studied for the abundance of elements?
What layer of the atmosphere is studied for the abundance of elements?
What can be inferred about the abundance of elements in the atmosphere?
What can be inferred about the abundance of elements in the atmosphere?
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Study Notes
Earth's Crust Composition
- Oxygen and silicon are the most abundant elements in Earth's crust by mass.
- Oxygen and silicon are often found bound together, forming silica.
- Silica is a mineral that makes up the majority of rocks in the Earth's crust.
- The abundance of silicon and oxygen in the crust explains why silica is a dominant component of rocks.
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