Geography Quiz - Definitions

What does Planetary Science study?

• Only planets

• Only stars

• Planetary systems, moons, stars, and other objects in space

• Only the Earth and Moon

What is included in the solar system?

• Only the Sun and planets

• The Sun, planets, moons, asteroids, comets, and other objects

• Only planets and their moons

• Only asteroids and comets

What is most of the solar system made of?

• Planets

• Asteroids

• Empty space

• Stars

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

• It must orbit a star

• It must have moons

• It must be big enough for gravity to make it spherical

• It must have cleared its orbit of other objects

What is the universe?

• Only the solar system

• The space beyond the Milky Way galaxy

• Everything, including all matter, energy, and space

• Only planets and stars

What do we call planets outside our solar system?

• Dwarf planets

• Exoplanets

• Asteroids

• Satellites

What is another name for a moon?

• Exoplanet

• Asteroid

• Natural satellite

• Dwarf planet

What is a star made of?

• Rock and dust

• Ice and rock

• A big bright ball of hot gas

• A solid metal core

What is a comet primarily made of?

• Metal and dust

• Ice, rock, and gas

• Lava and gas

• Only ice

What is an asteroid?

• A large planet orbiting the Sun

• A bright ball of hot gas

• A big rock that orbits the Sun

• A small moon