Across
- 3. the envelope of gasses surrounding the earth or another planet
- 7. the technical name for the small, solid bodies moving within the Solar System.
- 11. cliffs formed where the crust has shifted that run for hundreds of kilometers across a planet’s or moon’s surface
- 12. the bright trail of light created by small solid particles entering Earth’s atmosphere and burning up. A “shooting star.”
- 14. earthquakes, volcanoes, and mountain building caused by the interaction of two or more tectonic plates along their boundaries (two words)
- 16. a small spherical grain embedded in a meteorite.
- 17. situated or relating to travel between planets
- 21. a planet that orbits a star outside the solar system.
- 22. similar in size or composition to the earth, especially being one of the four inner planets of our solar system
- 24. the breaking apart of a molecule by intense radiation. (two words)
- 25. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
- 26. second largest planet in our solar system
Down
- 1. an effect whereby a mass moving in a rotating system experiences a force acting perpendicular to the direction of motion and to the axis of rotation. (two words)
- 2. a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth (two words)
- 4. satellites that by their gravitational attractions prevent particles in a planet’s rings from spreading out and dispersing.
- 5. relating to the planet Jupiter or the class of giant planets to which Jupiter belongs
- 6. the outermost layer of rock of which a planet consists
- 8. the interaction of electric currents or fields and magnetic fields.
- 9. a mass of whirling fluid or air, especially a whirlpool or whirlwind
- 10. a vast region in which comet nuclei orbit. This cloud lies far beyond the orbit of Neptune (two words)
- 13. an unmanned exploratory spacecraft designed to transmit information about its environment.
- 15. a meteorite lacking chondrules, associated with larger bodies whose gravity and internal heating has caused them to differentiate.
- 18. the fact or process of a species, family, or other group of animals or plants becoming extinct.
- 19. dwarf planets that are farther from the Sun than Neptune
- 20. a region between the orbits of Mars and Jupiter in which most of the Solar System’s asteroids are located (two words)
- 23. a white band in a Jovian planet’s atmosphere, encircling the planet. It appears that in these zones gas is rising and cooling, forming cloud particles.