1) What is an exoplanet? a) A star b) A moon c) A planet outside our solar system d) A comet 2) What does the passing star hypothesis suggest? a) Stars collide b) Planets form from passing stars c) Stars never move d) Stars are stationary 3) What is the solar nebula hypothesis? a) Stars form from gas b) Planets form from a rotating disk of gas and dust c) Moons form from planets d) Galaxies form from stars 4) What are Jovian planets? a) Rocky planets b) Gas giants c) Dwarf planets d) Icy bodies 5) What is a planetesimal? a) A small asteroid b) A small body that forms planets c) A comet d) A moon 6) What is differentiation in planetary science? a) Separation of layers by density b) Formation of moons c) Creation of atmospheres d) Development of rings 7) Which planet is considered a Jovian planet? a) Earth b) Jupiter c) Mars d) Venus 8) What is the main component of Jovian planets? a) Rock b) Gas c) Ice d) Metal 9) What does the solar nebula hypothesis explain? a) Formation of stars b) Formation of the solar system c) Formation of galaxies d) Formation of the universe 10) What is the primary characteristic of exoplanets? a) Orbit other stars b) Orbit the Sun c) Have no atmosphere d) Are always rocky 11) What is the main difference between terrestrial and Jovian planets? a) Size b) Composition c) Color d) Orbit 12) What is the significance of planetesimals? a) They form stars b) They are building blocks of planets c) They create black holes d) They are remnants of old planets 13) What is the role of differentiation in planet formation? a) Creates atmospheres b) Forms layers of planets c) Generates magnetic fields d) Causes planets to exist in different parts of the solar system 14) Which hypothesis involves a star passing close to the Sun? a) Solar nebula hypothesis b) Passing star hypothesis c) Big Bang theory d) Steady state theory 15) What is the main feature of the solar nebula hypothesis? a) A rotating disk b) A stationary cloud c) A collapsing star d) A binary system 16) Which planet is not a Jovian planet? a) Saturn b) Neptune c) Mars d) Uranus 17) What is the primary method to detect exoplanets? a) Direct imaging b) Transit method c) Radio signals d) Gravitational waves 18) What is a key process in the solar nebula hypothesis? a) Accretion b) Evaporation c) Sublimation d) Deposition 19) What is the primary composition of planetesimals? a) Ice and rock b) Gas and dust c) Metal and water d) Carbon and nitrogen 20) What is the main difference between exoplanets and planets in our solar system? a) Location b) Size c) Color d) Temperature

Exoplanets/Solar System

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