Across
- 2. atmosphere, weather and temperature
- 4. charged particles sent by the sun
- 5. ball of ice that hurtles through space
- 7. a sphere of molecules that surround a mass of minerals
- 8. a molecule made of one atom
- 9. an endless void that has few molecules spread here and there
- 10. a force that pulls objects together
- 12. a ball of minerals that orbits the earth
- 14. the area on the 2D plane of a 3D object
- 15. the outer layer of an atmosphere
- 17. a rock in space
- 18. the act of combining particles to create energy
Down
- 1. a small item made of molecules
- 3. a sphere of magnetic energy that protects an object
- 6. the imperial measurement of temperature
- 8. a chemical created when merging two hydrogen atoms together
- 11. special particles that can damage DNA structure
- 13. a ball of helium and hydrogen
- 15. the properties of an area
- 16. energy that power technology
