4.1 - 4.4 Exploring the Solar System Review

What are the two main types of planets in the solar system?

• Gas giants and ice giants

• Terrestrial planets and gas giants

• Dwarf planets and gas planets

• Rocky planets and moons

Which of the following is NOT a requirement for a celestial object to be classified as a planet?

• It must orbit the Sun

• It must have enough mass to be spherical

• It must have an atmosphere

• It must dominate its orbit

What distinguishes a dwarf planet from a planet?

• A dwarf planet is smaller than all planets

• A dwarf planet does not orbit the Sun

• A dwarf planet does not dominate its orbit

• A dwarf planet is only composed of ice

Where is the asteroid belt located?

• Between Earth and Mars

• Between Mars and Jupiter

• Beyond Neptune

• Between the Sun and Mercury

What is the Kuiper Belt primarily composed of?

• Rocky asteroids

• Icy bodies and dwarf planets

• Gaseous clouds

• Dust and meteors

Which of the following planets is considered a gas giant?

• Venus

• Earth

• Jupiter

• Mars

What is the primary difference between a terrestrial planet and a gas giant?

• Terrestrial planets are smaller and rocky, while gas giants are larger and gaseous

• Gas giants have moons, while terrestrial planets do not

• Terrestrial planets have rings, while gas giants do not

• Gas giants orbit closer to the Sun than terrestrial planets

Why are planets visible in the night sky?

• They emit their own light

• They reflect sunlight

• They absorb radiation from the Sun

• They produce energy through nuclear fusion

Which planet has the most moons?

• Mars

• Saturn

• Jupiter

• Uranus

The Oort Cloud is best described as:

• A dense region of gas near the Sun

• A collection of asteroids between Mars and Jupiter

• A boundary of the solar system filled with icy bodies

• A region of space where new planets are forming