Flashcards
Electromagnetic Spectrum
Flashcards do conjunto (25)
- 1Electromagnetic SpectrumGCSE Physics P1.6
- 2List the different waves in the electromagnetic spectrum in decreasing order of wavelength.Radio waves, microwaves, infrared radiation, visible light, ultraviolet, x-rays and gamma rays.
- 3What speed do the waves in this spectrum travel at?300 million metres per second.
- 4Are the electromagnetic waves transverse or longitudinal?Transverse.
- 5What is the range, in terms of wavelength, for radio waves?1000 metres to 10 centimetres.
- 6Complete this sentence: Long radio waves are reflected by the _______ , while short waves _______ through the atmosphere and into space.Long radio waves are reflected by the atmosphere , while short waves pass through the atmosphere and into space.
- 7Name three uses for radio waves.1. To transmit radio / T.V. programmes.
2. To detect objects (radar).
3. For communication with astronauts. - 8What is the range, in terms of wavelength, for microwaves?1 metre to 1 millimetre.
- 9Complete this sentence: Microwaves are absorbed by _______ , which then gain _______ and _______ making the _______ rise.Microwaves are absorbed by cells / water, which then gain energy and vibrate making the temperature rise.
- 10Name three uses for microwaves.1. To heat foods and drinks.
2. Mobile phone communications.
3. Traffic cameras and radar. - 11What is the range, in terms of wavelength, for infrared radiation?1 millimetre to 700 nanometres.
- 12Complete this sentence: Infrared radiation, or also called _______ , is emitted by _______ (the hotter they are, the _______ radiation it emits), and is detected by _______ .Infrared radiation, or also called thermal, is emitted by all things (the hotter they are, the more radiation it emits), and is detected by special detectors.
- 13Name three uses for infrared radiation.1. Night vision goggles.
2. Room heaters.
3. Passive Infrared devices (P.I.R.s), such as those in alarm systems. - 14What is the range, in terms of wavelength, for visible light?700 nanometres to 400 nanometres.
- 15Complete these sentences: Light is emitted by many things, including the _______ . All objects absorb some of the light, meaning they seem _______ . Light is detected by our _______ or light detectors.Light is emitted by many things, including the sun . All objects absorb some of the light, meaning they seem coloured . Light is detected by our eyes or light detectors.
- 16Name three uses for visible light.1. To see.
2. Cameras and photography.
3. Fiber optic cables. - 17What is the range, in terms of wavelength, for ultraviolet light?400 nanometres to 10 nanometres.
- 18Complete these sentences: Ultraviolet is emitted by special _______ and can be found in _______ . It is detected by special _______. It can cause skin to _______ or to _______ , if the exposure is longer.Ultraviolet is emitted by special lights and can be found in sunlight . It is detected by special detectors. It can cause skin to tan or to burn, if the exposure is longer.
- 19Name three uses for ultraviolet light.1. To verify bank notes.
2. To kill microbes.
3. To create tans. - 20What is the range, in terms of wavelength, for x-rays?10 nanometres to 0.01 nanometres.
- 21Complete these sentences: X-rays are emitted by heavy _______ . They are absorbed by _______ , which is why bones look white in x-ray scans.X-rays are emitted by heavy elements . They are absorbed by calcium , which is why bones look white in x-ray scans.
- 22Name three uses for x-rays.1. To detect broken bones.
2. CAT scans.
3. To destroy tumours. - 23What is the range, in terms of wavelength, for gamma rays?Less than 10 picometres.
- 24Complete these sentences: Gamma rays are emitted by _______ , or _______ , nuclei. They are absorbed thick _______ or _______ .Gamma rays are emitted by unstable , or radioactive, nuclei. They are absorbed thick lead or concrete .
- 25Name three uses for gamma rays.1. To sterilise medical equipment.
2. To make / destroy cancerous cells.
3. Radioactive tracers.
Informações
- Descrição
- Flashcards for the Electromagnetic Spectrum for AQA GCSE Physics.
- Criado por
- Alfonzzzo R
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