UNIT 13 VOCABULARY - SPACE
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Asteroid: Piece of rock or metal made up of material similar
to that which formed the planets that orbit the Sun
Comets: Consists primarily of ice, dust, and rock whose orbit
is a long narrow ellipse
Galilean Moons: The four largest and brightest moons of
Jupiter discovered by Galileo
Gravity: The force of attraction that pulls objects toward
each other
Inner Planet: Any of the rocky, terrestrial planets of Mercury,
Venus, Earth, and Mars whose orbits range is within the
asteroid belt
Outer Planet: Any of the larger, gaseous planets Jupiter,
Saturn, Uranus, and Neptune whose orbits lie beyond the
asteroid belt
Meteor: Small meteoroid that burns upon entry of Earth's
atmosphere
Meteorite: Remains of meteoroids that strike the surface of
Earth or the Moon
Meteoroid: A natural chunk of rock or dust existing outside
Earth's atmosphere
Moon: A natural satellite that orbits a planet. Some planets
have no moons; others have over 60 moons.
Orbit: The path one object takes as it revolves around
another object in space
Planet: Any of the large celestial bodies that revolve around
the Sun in the Solar System
Satellite: A smaller body that orbits a larger body (the
Moon) or Spacecraft that orbits Earth
Solar System: The Sun together with the group of planets
that are held by its attraction and revolve around it
Sun: The luminous celestial body around which Earth and
other planets revolve, and receive heat and light
Rotation: "A 24-hour period on Earth, or, the time it takes
the Earth to make one complete rotation on its axis
Revolution: Earth's year-long elliptical orbit around the Sun
(planets have different rotation and revolution times)
UNIT 13 VOCABULARY - SPACE
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Asteroid: Piece of rock or metal made up of material similar
to that which formed the planets that orbit the Sun
Comets: Consists primarily of ice, dust, and rock whose orbit
is a long narrow ellipse
Galilean Moons: The four largest and brightest moons of
Jupiter discovered by Galileo
Gravity: The force of attraction that pulls objects toward
each other
Inner Planet: Any of the rocky, terrestrial planets of Mercury,
Venus, Earth, and Mars whose orbits range is within the
asteroid belt
Outer Planet: Any of the larger, gaseous planets Jupiter,
Saturn, Uranus, and Neptune whose orbits lie beyond the
asteroid belt
Meteor: Small meteoroid that burns upon entry of Earth's
atmosphere
Meteorite: Remains of meteoroids that strike the surface of
Earth or the Moon
Meteoroid: A natural chunk of rock or dust existing outside
Earth's atmosphere
Moon: A natural satellite that orbits a planet. Some planets
have no moons; others have over 60 moons.
Orbit: The path one object takes as it revolves around
another object in space
Planet: Any of the large celestial bodies that revolve around
the Sun in the Solar System
Satellite: A smaller body that orbits a larger body (the
Moon) or Spacecraft that orbits Earth
Solar System: The Sun together with the group of planets
that are held by its attraction and revolve around it
Sun: The luminous celestial body around which Earth and
other planets revolve, and receive heat and light
Rotation: "A 24-hour period on Earth, or, the time it takes
the Earth to make one complete rotation on its axis
Revolution: Earth's year-long elliptical orbit around the Sun
(planets have different rotation and revolution times)