Question

Which statements describe Earth?

Answer 1

It is a terrestrial planet.

It was formed from gas and dust.

It was formed in a debris disk from colliding planetesimals.

Explanation:

The earth is one of the four terrestrial planets that orbits the sun and forms a significant part of the solar system.

The solar system is made up of the planets moving round the sun which is the star. The satellites moves round the planets. Also, there are other interplanetary bodies that moves in the solar system.

• According to the solar nebular theory, the earth was formed from a gas of intersellar dust which was rotating.
• Intense pressure and temperature led to the collapse of the core under gravitational pull. The core formed the sun.
• The debris disk accreted to form several planetesimmals from which the earth was derived.
• Most of the solid and denser materials were pulled in closely to sun and they are rock balls called terrestrial planets.
• The outer parts are gas giants.

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