Models of Atoms & The Electromagnetic Spectrum
Across
- 2. A negatively charged sub-atomic particle found orbiting the centre of the atom on shells.
- 4. The type of electromagnetic radiation with the shortest wavelength (but highest frequency).
- 7. The type of electromagnetic radiation with the longest wavelength.
- 9. A neutrally charged sub-atomic particle found in the centre of the atom.
- 10. All types of electromagnetic radiation can be found on the electromagnetic ___________________.
- 12. The type of electromagnetic radiation that can cause skin cancer and which is emitted by the Sun.
- 13. A positively charged sub-atomic particle found in the centre of the atom.
- 14. The centre of the atom, containing most of the mass of an atom.
- 16. A type of electromagnetic radiation used in hospitals to see inside the human body (Hint: Write in the form ___-______).
Down
- 1. The modern model of the atom was proposed by the scientist called ____________.
- 3. After radiation is emitted from a source, it is ____________________ through the atmosphere to its receiver.
- 5. Once radiation reaches a receiver, it is __________________.
- 6. A model of electromagnetic raadiation which suggests that all radiation is emitted in the form of 'ripples of waves' (from an oscillating source to an absorber/receiver).
- 8. This happens when an atom absorbs a photon of energy with enough energy that electrons are lost from the atom.
- 11. A model of electromagnetic radiation which suggests that all radiation is emitted in 'packets' of energy that are transferred from a source to absorber/receiver.
- 15. The name given to the object giving out (emitting) radiation.