Planets of the Solar System Word Search (Free Printable + Answer Key)
This planets word search challenges students to find all eight planets of our solar system plus Pluto and Asteroid. It is a fun and educational activity for any astronomy or earth science unit, with a free printable worksheet and answer key.
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Word List
MERCURY
The smallest planet and the closest to the Sun. Mercury has extreme temperature swings, reaching over 400 degrees Celsius during the day and dropping well below freezing at night.
VENUS
The second planet from the Sun and the hottest planet in the solar system due to its thick carbon dioxide atmosphere. Venus rotates in the opposite direction from most planets.
EARTH
The third planet from the Sun and the only known planet with liquid water on its surface and life as we know it. Earth has one natural satellite: the Moon.
MARS
The fourth planet from the Sun, sometimes called the Red Planet due to iron oxide on its surface. Mars has the tallest volcano in the solar system, Olympus Mons.
JUPITER
The largest planet in our solar system, a gas giant with dozens of moons. Jupiter's Great Red Spot is a storm larger than Earth that has lasted for hundreds of years.
SATURN
The sixth planet from the Sun, famous for its stunning ring system made of ice and rock particles. Saturn is a gas giant and the least dense planet in the solar system.
URANUS
The seventh planet from the Sun, a gas giant that rotates on its side relative to its orbit. Uranus appears blue-green due to methane in its atmosphere.
NEPTUNE
The eighth and farthest official planet from the Sun. Neptune is a deep blue ice giant with the strongest winds in the solar system.
PLUTO
Once considered the ninth planet, Pluto was reclassified as a dwarf planet in 2006. It orbits in the distant Kuiper Belt beyond Neptune.
ASTEROID
A rocky object orbiting the Sun, smaller than a planet. Most asteroids are found in the Asteroid Belt between Mars and Jupiter.
About Planets of the Solar System
Our solar system contains eight officially recognized planets orbiting the Sun, along with dwarf planets, asteroids, and other celestial bodies. Each planet has unique characteristics, from Mercury's extreme temperatures to Neptune's powerful winds.
Planets of the Solar System Vocabulary
This puzzle includes all eight planets from MERCURY to NEPTUNE, plus PLUTO (now classified as a dwarf planet) and ASTEROID. Finding these names helps reinforce the order and names of the major bodies in our solar system.
How to Use This Word Search in Class
Have students complete the word search, then arrange the planet names in order from the Sun. As an extension, students can write one fact about each planet they find. This makes for a solid introductory activity for an astronomy unit.
Printable Planets of the Solar System Word Search Worksheet
Click the print button to print this planets of the solar system word search. The printable version includes the puzzle grid and word list, perfect for classroom handouts or homework.