ESS Ch 23 Review

any of the Earth-like planets: Mercury, Venus, Mars and Earth

• nebula
• planetesimal
• terrestrial
• Jovian

the Jupiter-like planets: Jupiter, Saturn, Uranus, and Neptune; these have low densities and are huge gas giants

• nebula
• planetesimal
• terrestrial
• Jovian

a cloud of gas and/or dust in space

• nebula
• planetesimal
• terrestrial
• Jovian

small, irregularly shaped body formed by colliding matter

• nebula
• planetesimal
• terrestrial
• Jovian

a round object that orbits the sun but has not cleared the neighborhood around its orbit

• comet
• coma
• dwarf planet
• asteroid

a small body made of rocky and metallic pieces held together by frozen gases

• comet
• coma
• dwarf planet
• asteroid

the fuzzy, gaseous component of a comet’s head

• comet
• coma
• dwarf planet
• asteroid

a small, rocky body, which can range in size from a few hundred km to less than a km

• comet
• coma
• dwarf planet
• asteroid

a small, solid particle that travels through space

• meteoroid
• meteor
• meteorite
• asteroid

the luminous phenomenon observed when a meteoroid enters Earth’s  atmosphere and burns up, popularly called a shooting star

• meteoroid
• meteor
• meteorite
• asteroid