Across
- 2. Mercury, Venus, Earth, and Mars are grouped into ... planets based on their physical characteristics.
- 3. Earth's ... can cause changes in seasons.
- 5. The eight planets orbit around the Sun in ... orbits.
- 8. The ... satellites are human's made satellite.
- 9. The biggest planet in our solar system is ...
- 10. Mars, Jupiter, Saturn, Uranus, and Neptune are grouped into ... planets based on Earth's orbit as the boundary.
- 12. Uranus is a ... planet in solar system.
- 15. Venus is the ... planet.
- 16. Source of light in our solar system
- 17. Make-make, Ceres, Pluto, Haumea, Eris are ... planets.
- 18. Comets are ... that is why when comets come close to the Sun, the frozen water and gases heat up, creating a tail of gas and dust particles.
- 19. Sun is composed mostly of hydrogen and ...
Down
- 1. Planets in the solar system are grouped into inner and outer planets based on boundary set by the ...
- 4. Uranus rotates in ... direction and it rotates on its side.
- 6. Mercury and ... have no moon.
- 7. The red planet in our solar system is ...
- 11. Earth takes 24 hours to ... in own axis.
- 12. Venus has a high amount of ... in their atmosphere.
- 13. The sixth planet in our solar system is ...
- 14. The smallest planet in our solar system is ...