¿De Dónde Vino el Agua de la Tierra?

The video explores the mystery of Earth's water, which covers 70% of its surface. Despite the solar system's formation from a dust and gas cloud, the inner solar system was too hot for water to form with Earth. Comets, initially considered as water sources, were ruled out due to their heavy hydrogen content. Instead, coal chondrites, a type of meteorite, are identified as the likely source of Earth's water, as they contain water with similar heavy hydrogen levels to terrestrial water.

What percentage of Earth's surface is covered by liquid water?

• 60%

• 50%

• 70%

• 80%

Why couldn't water have been part of the original solid particles that formed Earth?

• The solar system was too cold for water to exist.

• The young inner solar system was too hot for water ice.

• Water was absorbed by other planets.

• Water was too heavy to be part of the original particles.

Why were comets ruled out as the source of Earth's water?

• They contain no water.

• They are too far from Earth.

• They have more heavy hydrogen than Earth's water.

• They are made of different elements.

What is the most likely source of Earth's water according to the video?

• Comets

• Volcanic eruptions

• Asteroids

• Carbonaceous chondrites

What characteristic of carbonaceous chondrites makes them a likely source of Earth's water?

• They contain no carbon.

• They formed within the solar system's freezing line.

• They have heavy hydrogen levels similar to Earth's water.

• They are the largest type of meteorite.