Free Printable 3rd Grade Astronomy Activities

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Sun, Moon and Stars Crossword Puzzle

Sun, Moon, and Stars crossword puzzle for Grades 2–4. Vocabulary includes planets, constellations, and celestial objects from our solar system.

Sopa de Letras Galactica Word Search

Spanish-language astronomy word search for Grades 3–5. Find 15 hidden words including planeta, espacio, estrellas, and gravedad in a circular grid.

The Solar System Word Search

Solar system word search for Grades 3–5. Find 15 hidden words including Mercury, Jupiter, Saturn, and nebula in this astronomy vocabulary puzzle.

Moon Phases Coloring and Questions

Printable elementary science worksheet on moon phases: students color the moon's lit and dark portions and answer yes/no questions about lunar visibility.

Sistema Planetario Word Search

Spanish-language solar system word search for Grades 3–5. Find 16 hidden words including planets, asteroids, and Moon (Luna) and atmosphere (atmósfera).

Sistema Solar Word Search

Spanish-language solar system word search for Grades 3–5. Find 16 hidden words including planeta, rotación, eclipse, and galaxias.

Space Center Houston Word Search

Space Center Houston word search for Grades 3–5. Find 20 hidden words about NASA, the Apollo program, and spacecraft, including astronaut, moonwalk, and discovery.

Space Science Test

Printable elementary space science test for Grades 3–5 with true-or-false questions, multiple choice, and short answer covering planets, moons, and the solar system.

Solar System Crossword Puzzle

Solar system crossword puzzle for Grades 3–5. Test knowledge of planets, the Sun, and their characteristics like rings, temperature, and distance from the Sun.

Space and Planets Word Search – Spanish

Spanish astronomy word search for Grades 3–4 with 10 hidden space words. Find luna, Marte, Neptuno, and more in a smiley-shaped grid.

¡Qué Tema 4! Word Search

Spanish astronomy word search for Grades 3–5. Find 10 hidden words including Luna, Marte, astronauta, and Saturno in a moon-shaped grid.

¡Qué Tema 3! Word Search

Spanish astronomy word search for Grades 3–5. Find 10 hidden words about the solar system, including Saturno, Júpiter, and meteorito, in a spiral grid.