28 terms

Solar System Vocabulary Set #10

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Mercury
The first planet from the sun named after the speedy messenger of the Roman gods.
Solar system
Consists of our sun, its planets, and all the other objects that revolve around the sun.
Light Year
Distance light travels in one year.
Magnitude
Term that refers to the brightness of a star.
Gravity
Force of attraction between massive objects; such as the pull between Earth & moon.
24 hours
The amount of time it takes for the Earth to make one rotation on its axis.
Mars
This small planet is known as the rusty planet due to its reddish color.
Meteorite
A meteor that strikes the Earth's surface; large ones may cause craters.
365 ¼ days (366 days - leap year) or 1 year
The amount of time it takes for the Earth to make one revolution around the sun.
Pluto
Farthest planet from the sun named for the Roman God of the underworld, known as a dwarf planet.
Meteor
Streak of light produced when a meteoroid burns up in our atmosphere.
Polaris
Star found in Ursa Minor; also known as the North Star.
Milky Way
The name for the spiral galaxy that contains our solar system.
Moon
A dry, airless, barren world that orbits our planet once about every 28 days (27.3 days to be exact).
Neptune
A giant bluish planet named for the Roman god of the sea.
Venus
Second planet from the sun that rotates in reverse, called retrograde rotation.
Saturn
Planet with seven major rings and more moons than any other planet, many of its moons are connected with rings.
Black hole
A very dense area with gravity so strong that nothing can escape it (not even light).
Sun
A medium-sized yellow star that is very important to Earthlings.
Big Dipper
This well-known constellation is really part of a larger constellation called Ursa Major.
Nebula
A huge cloud of dust and gas that is believed to be the birthplace of stars.
Uranus
Seventh planet from the sun that is described as a planet on its side.
Zodiac
Twelve constellations found along the ecliptic, such as Leo, Virgo, & Cancer.
Sirius
The brightest star in our solar system found in Canis Major constellation.
Earth
The third rock from the sun.
Asteroid
Objects made of rocks and metals that can be found in a "belt" between Mars & Jupiter.
Constellation
Groups of stars that people believed were imaginary figures of animals or people.
Jupiter
Largest planet in our solar system and is known for its giant red spot.
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