Across
- 2. this element has 11 protons
- 4. stars produce their own light so they are said to be:
- 5. describes how shiny a substance is
- 7. renewable power source that uses sunlight
- 12. the sphere of the Earth that includes water in its three states
- 13. this subatomic particle flows to produce electricity
- 15. this type of change involves the formation of a new substance and evidence might include a change in colour
- 16. a measure of mass per unit volume
- 19. this is used to charge an object using static electricity without touching
- 21. the atomic mass of helium
- 22. this family on the periodic table is very reactive and has one valence electron
- 25. this element has 17 electrons
- 27. number of hydrogen atoms per oxygen atoms in H2O (water)
- 28. happens when sunlight to the Earth or the moon is blocked
- 29. coloured lights that move across the night sky when solar particles collide with the atmosphere
Down
- 1. non-renewable power source that uses uranium
- 3. allows electrons to flow; copper, for example.
- 6. a pattern made by stars in the night sky
- 8. this subatomic particle has a positive charge
- 9. object made of rock and metal usually found between Mars and Jupiter
- 10. type of charging that happens when you rub two different materials together
- 11. describes how quickly liquid can flow
- 14. used to measure current in a circuit
- 17. non-living part of an ecosystem
- 18. type of circuit where each load can be operated independently
- 20. this family on the periodic table has stable elements that don't react
- 23. type of circuit where, if one load breaks, the all stop working
- 24. a shooting star
- 26. the largest planet in our solar system