Solar System Vocabulary Crossword Puzzle

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ACCRETION : growth in size or increase in amount
GAS GIANTS : The name given to the first four outer planets: Jupiter, Saturn, Uranus, and Neptune
ICE GIANTS : Uranus, Neptune (frozen water, ammonia, methane)
INTERSTELLAR CLOUD : a cloud of gas and dust in between the stars. such clouds may be many light-years in diameter.
LATE HEAVY BOMBARDMENT : the surge in cratering impacts in the solar system that occurred about 3.8 billion years ago
PLANETESSIMAL : One of the small asteroid-like bodies that formed the building blocks of the planets.
PROTOPLANETARY DISC : A rotating disk of gas and dust grains surrounding a newly formed star or protostar. Over time, accretion within the disk tends to produce planets.
SOLAR NEBULA THEORY : the theory that describes how stars and planets form from contracting, spinning disks of gas and dust
TERRESTRIAL PLANETS : The name given to the four inner planets: Mercury, Venus, Earth, and Mars
JOVIAN PLANETS : Jupiter, Saturn, Uranus, and Neptune because they are gaseous
PHOTO DISSOCIATION : Solar ultraviolet radiation strips electrons from atoms, creating an upper ionosphere of electrically charged gas
RESONANCE : A phenomenon that occurs when two objects naturally vibrate at the same frequency
SCARP : cliff on Mercury; similar to those on Earth but much higher.
DWARF PLANET : An object that orbits the sun and is spherical, but has not cleared the area of its orbit.
ROCHE LIMIT : the closest distance from the center of a planet that a satellite can approach without being pulled apart by the planet's gravitational field.

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QUESTIONS LIST:

accretion : growth in size or increase in amount
gas giants : the name given to the first four outer planets: jupiter, saturn, uranus, and neptune
ice giants : uranus, neptune (frozen water, ammonia, methane)
interstellar cloud : a cloud of gas and dust in between the stars. such clouds may be many light-years in diameter.
late heavy bombardment : the surge in cratering impacts in the solar system that occurred about 3.8 billion years ago
planetessimal : one of the small asteroid-like bodies that formed the building blocks of the planets.
protoplanetary disc : a rotating disk of gas and dust grains surrounding a newly formed star or protostar. over time, accretion within the disk tends to produce planets.
solar nebula theory : the theory that describes how stars and planets form from contracting, spinning disks of gas and dust
terrestrial planets : the name given to the four inner planets: mercury, venus, earth, and mars
jovian planets : jupiter, saturn, uranus, and neptune because they are gaseous
photo dissociation : solar ultraviolet radiation strips electrons from atoms, creating an upper ionosphere of electrically charged gas
resonance : a phenomenon that occurs when two objects naturally vibrate at the same frequency
scarp : cliff on mercury; similar to those on earth but much higher.
dwarf planet : an object that orbits the sun and is spherical, but has not cleared the area of its orbit.
roche limit : the closest distance from the center of a planet that a satellite can approach without being pulled apart by the planet's gravitational field.