Earth's Early Atmosphere Review

Front

Which atmosphere was composed primarily of water vapor? Options: First Atmosphere, Evolving Atmospheres, Current Atmosphere

Back

Evolving Atmospheres

Front

Which atmosphere became cooler and condensed all of the water vapor to create the oceans? Options: First Atmosphere, Evolving Atmospheres, Current Atmosphere

Back

Evolving Atmospheres

Front

Which gas was introduced by blue green algae (cyanobacteria) and allowed for more complex life to exist on Earth?

Back

oxygen

Front

This gas was in high concentrations in the early atmosphere, and later condensed to form Earth's oceans.

Back

water vapor

Front

If we wanted to model the introduction of oxygen to this model, where would it take place? Options: from the atmosphere to the ocean, from the ocean to the atmosphere, from the sediment to the atmosphere, from the ocean to the sediment

Back

from the ocean to the atmosphere

Front

When did blue green algae (cyanobacteria) start adding oxygen to the atmosphere?

Back

Towards the end of the atmosphere evolution

Front

What is the direct impact of burning fossil fuels?

Back

Moving CO₂ from the sediment to the atmosphere

Front

Which two gases most likely escaped the Earth's atmosphere because the gravity was too weak to hold them? Options: Argon, oxygen; oxygen, carbon dioxide; hydrogen, helium; methane, ammonia.

Back

hydrogen, helium

Front

The second atmosphere, volcanoes appeared and released ________ and _____________.

Back

carbon dioxide and nitrogen

Front

Earth’s earliest atmosphere lacked which gas that is necessary for life as we know it to exist today?

Back

oxygen