Our Solar System: An Overview

According to the nebular theory, how did the solar system form, and what is a key difference between terrestrial and Jovian planets?

• The solar system formed from a rotating cloud of gas and dust; terrestrial planets are rocky, while Jovian planets are gaseous.

• The solar system formed from a collision of stars; terrestrial planets are gaseous, while Jovian planets are rocky.

• The solar system formed from a single asteroid; terrestrial planets and Jovian planets are both icy.

• The solar system formed from volcanic eruptions; terrestrial planets are larger than Jovian planets.

The Sun contains _______ of the solar system's mass.

• 99.5%

• 75%

• 50%

• 10%

Which of the following is NOT a smaller body in the solar system?

• Dwarf planets

• Asteroids

• Comets

• Stars

List the types of smaller bodies found in the solar system. Fill in the blanks: The smaller bodies in the solar system include _______, _______, _______, and _______.

• Dwarf planets, Asteroids, Comets, Meteoroids

• Planets, Stars, Black holes, Nebulae

• Moons, Suns, Galaxies, Quasars

• Gas giants, Red dwarfs, Pulsars, Supernovae

How many planets are in the solar system? Fill in the blank: There are _______ planets in the solar system.

• Eight

• Seven

• Nine

• Ten

What do the eight planets in the solar system have?

• Their own satellites

• No satellites

• Only one satellite each

• No moons

According to the Nebular theory, what does it describe?

• The formation of the solar system

• The extinction of dinosaurs

• The invention of the telescope

• The discovery of electricity

According to the Nebular theory, the Sun and planets formed from what?

• Solar nebula

• Comet dust

• Asteroid belt

• Black hole

• Supernova remnant

According to the Nebular theory, what is a rotating cloud of gas and dust called?

• Solar nebula

• Comet tail

• Asteroid belt

• Planetary ring

According to the Nebular theory, what happened when the solar nebula contracted?

• It formed a hot protosun

• It immediately became a black hole

• It split into several small stars

• It cooled down and disappeared