Podcast
Questions and Answers
What is the current composition of Earth's atmosphere?
What is the current composition of Earth's atmosphere?
- 80% nitrogen, 20% oxygen (correct)
- 100% nitrogen
- 80% oxygen, 20% nitrogen
- 50% nitrogen, 50% oxygen
What played a significant role in creating the early carbon dioxide rich atmosphere?
What played a significant role in creating the early carbon dioxide rich atmosphere?
- Volcanic activity (correct)
- Plant activity
- Animal activity
- Solar activity
What reduced the abundance of CO2 and increased the amount of oxygen in the atmosphere?
What reduced the abundance of CO2 and increased the amount of oxygen in the atmosphere?
- Solar activity
- Volcanic activity
- Animal activity
- Algae and plant activity (correct)
What are the main gases that make up Earth's atmosphere?
What are the main gases that make up Earth's atmosphere?
What role did volcanic activity play in creating the early atmosphere?
What role did volcanic activity play in creating the early atmosphere?
What is the theory regarding the evolution of Earth's atmosphere?
What is the theory regarding the evolution of Earth's atmosphere?
During the first billion years of Earth's history, the Earth was really dry and there was intense ______ activity
During the first billion years of Earth's history, the Earth was really dry and there was intense ______ activity
The early atmosphere consisted of loads of carbon dioxide, water vapor, and ______ along with smaller amounts of methane and ammonia
The early atmosphere consisted of loads of carbon dioxide, water vapor, and ______ along with smaller amounts of methane and ammonia
The composition of Earth's atmosphere is approximately eighty percent ______ and twenty percent oxygen
The composition of Earth's atmosphere is approximately eighty percent ______ and twenty percent oxygen
