Primitive Earth

What are the characteristics of primitive Earth and the main transformations that occurred in its geological and atmospheric composition over time?

• Primitive Earth had a molten surface and an atmosphere rich in hydrogen and helium, and over time, it cooled and developed a crust with an atmosphere rich in nitrogen and oxygen.

• Primitive Earth was similar to today's Earth with a stable climate and atmosphere, and over time, it remained largely unchanged.

• Primitive Earth had a solid surface and an atmosphere rich in oxygen from the beginning, and over time, it developed more complex life forms.

• Primitive Earth was covered in ice and had an atmosphere rich in carbon dioxide, and over time, it melted and developed a tropical climate.

The Earth emerged as a hot, molten planet. How was the Earth when it emerged?

• Cold and solid

• Hot and molten

• Covered in water

• Frozen and icy

What is the composition of Earth's surface today?

What is the average temperature of the planet today?

• 15°C

• 20°C

• 25°C

• 30°C

When did the emergence of Earth occur?

• 4.5 billion years ago

• 2 billion years ago

• 1 billion years ago

• 500 million years ago

According to the Solar Nebula Theory, what did the Sun form from?

• A) A cloud of dust and gas

• B) A solid rock

• C) A liquid ocean

• D) A metal core

What happened to the dust and particles around the Sun according to the Solar Nebula Theory?

• They formed the planets.

• They were absorbed by the Sun.

• They dissipated into space.

• They formed a ring around the Sun.

What shape did the bodies take during the formation of the Solar System?

• Spherical

• Cubical

• Pyramidal

• Cylindrical

The most accepted hypothesis about how planets were formed is:

• The Big Bang Theory

• The Nebular Hypothesis

• The Steady State Theory

• The Multiverse Theory

Planetesimals are objects formed by rock or ice. True or False?

• True

• False