Across
- 3. this is the height of a wave above or below the 'rest position'
- 5. this particle has no charge and is found in the nucleus
- 7. to calculate the density of an object you divide the mass by the...
- 9. this type of radiation allows us to see the world around us
- 11. there are two main types of waves - this is the most common
- 13. this type of radiation has the shortest wavelength - too much exposure can cause cancer
- 14. you can fit this many electrons in the second and third shells
- 17. which group is the element Chlorine found in?
Down
- 1. to calculate the wavespeed (v) you need to do frequency (f) multiplied by...
- 2. this element has the symbol 'Ca'
- 4. protons are found in the nucleus - what charge do they have?
- 6. this type of radiation is used by mobile phones
- 8. this particle has a negative charge and orbits the nucleus in shells
- 10. if a type of radiation can cause cancer it is said to be...
- 12. this type of radiation is used in hospitals to see broken bones
- 15. this element has the symbol 'Fe'
- 16. this type of radiation comes naturally from the Sun. Too much exposure can cause skin cancer