Formation of the Solar System

What term is used to describe the cloud of gas and dust from which the solar system was formed?

• Protoplanet

• Planetesimal

• Solar Nebula

• Solar System

Which term refers to a body that could form into a planet through the process of accretion in the early solar system?

• Solar Nebula

• Planet

• Solar System

• Planetesimal

What is the term for a large body in the process of becoming a planet during the early stages of the solar system?

• Solar Nebula

• Planetesimal

• Protoplanet

• Solar System

Which term best describes a celestial body orbiting a star, large enough to be rounded by its own gravity, but not large enough to cause thermonuclear fusion?

• Solar Nebula

• Protoplanet

• Solar System

• Planet

What term is used to describe the collection of planets and their moons in orbit around a sun, together with smaller bodies such as asteroids, meteoroids, and comets?

• Protoplanet

• Planetesimal

• Solar Nebula

• Solar System

What is the first step in the Nebular Model of the Formation of the Solar System?

• The solar nebula rotates and flattens.

• Planetesimals begin to form within the swirling disk.

• The young solar nebula begins to collapse because of gravity.

• Small planetesimals collide with larger ones, and the planets begin to grow.

What happens as the solar nebula rotates according to the Nebular Model?

• It cools down and fragments into planetesimals.

• It flattens and becomes warmer near its center.

• It collapses further and forms a single large planet.

• It immediately forms planets and moons.

According to the Nebular Model, how do planetesimals contribute to the formation of planets?

• They collide and merge to form larger planetary bodies.

• They are ejected out of the solar system.

• They remain the same size and orbit the sun.

• They disintegrate into dust and gas.

What is the final step in the formation of the Solar System as per the Nebular Model?

• The solar nebula stops rotating and the planets settle into their current orbits.

• The excess dust and gas is gradually removed from the solar nebula.

• A second sun forms from the remaining material.

• All planetesimals combine into a single large planet.

Which planet is known as the "Red Planet"?

• Venus

• Saturn

• Mars

• Neptune