Ohio Assessment for Educators (OAE) Integrated Science (024) Practice Exam

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What gases were released during early volcanic activity?

  1. Oxygen and hydrogen

  2. Carbon dioxide and methane

  3. Nitrogen and water vapor

  4. Aromatic hydrocarbons

The correct answer is: Nitrogen and water vapor

During early volcanic activity, gases released included nitrogen and water vapor, among others. This is significant because when Earth was forming, the atmosphere was primarily composed of these gases. Nitrogen was abundant due to volcanic outgassing, and water vapor played a crucial role in the formation of oceans as the planet cooled. This early atmosphere provided the necessary conditions for the development of life and influenced geological processes. The presence of nitrogen in the atmosphere is vital as it constitutes a large portion of Earth's current atmosphere, and water vapor is essential for the climate and weather systems. Understanding the composition of gases released during volcanic activity helps to reveal how the early Earth developed and how it has evolved into the planet we know today.

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