click below
click below
Normal Size Small Size show me how
Y9SciPhyTopic2
Year 9 Science Physics Topic 2 The Electromagnetic Spectrum
Question | Answer |
---|---|
Gamma rays | High frequency electromagnetic radiation. |
X-rays | Electromagnetic radiation that has a shorter wavelength than UV but longer than gamma rays. |
Ultraviolet | Electromagnetic radiation that has a shorter wavelength than visible light but longer than X-rays. |
Visible light | Electromagnetic waves that can be detected by the human eye. |
Infrared | Electromagnetic radiation that we can feel as heat. |
Microwaves | A type of electromagnetic radiation. |
Radio waves | A part of the electromagnetic spectrum. |
Electromagnetic radiation | A form of energy transfer, including radio waves, microwaves, infrared visible light, ultraviolet, X-rays and gamma rays. |
Electromagnetic spectrum | The entire frequency range of electromagnetic waves. |
Electromagnetic waves | A group of waves that all travel at the same speed in a vacuum and are all transverse. |
Vacuum | A place where there is no matter at all e.g. no space |
DNA | Deoxyribose nucleic acid. Chemical that makes up genes and chromosones,the instructions for the cells growth and activity. |
Skin cancer | A cancer or cancerous tumour on the skin. |
Mutations | A change in the DNA of a gene. |
Penetrate | To pierce or pass through. |
Illuminate | To light up with visible light. |
Fluorescent | Absorbing radiation of one wave length and re-emitting the energy at different wavelength (usually that it becomes visible). |
Fluorescent lamps | Lamp that works by fluorescence. It produces ultraviolet radiation which is then absorbed by a coating in the bulb and re-emitted as visible light. |
Thermal imaging | Photography that uses a detector of infrared radiation. |
Optic fibre | Glass or plastic strand which can direct light or infrared radiation. |
Radiotherapy | Cancer treatment in which the patient is given gamma radiation to kill the cancer cells. |
Ionising radiation | Radiation or certain types of high-energy particles that can cause atoms to become electrically charged (to become ions). |
Ion | An atom that has become electrically charged. |
Radioactive | Any material that gives out alpha, gamma or beta radiation. |
Alpha particle | A type of ionising radiation emitted by a radioactive material. |
Beta particles | A type of ionising radiation emitted by a radioactive material. |
Gamma particles | A type of ionising radiation emitted by a radioactive material. |