Flashcards
Physics Topic 6 (Electromagnetic spectrum)
Cards in this deck (28)
- 1What is the electromagnetic spectrum?is a continuous range of wavelengths ordered depending on their frequency and wavelength
- 2do waves transfer matter or energywaves only transfer energy
- 3all electromagnetic waves are .......... wavestransverse
- 4all of the electromagnetic waves travel at the same speed in free space, what is the speed at which they travelspeed of light around 300,000,000 m/s
- 5Name all the types of waves in the electromagnetic spectrumradio waves
micro waves
infrared
visible light
ultra violet
x-ray
gamma rays - 6What is the only part of the EM spectrum humans can see?Visible light spectrum
- 7What are the uses of Radio waves- Broadcasting and communications
- 8Why are Radio waves good for communications/ Broadcasting- They have the longest wave length
- they can refract of objects to change direction and the upper atmosphere - 9What are the benefits of Radio waves?Dangers = communications
- 10What are the uses of Micro waves?- cooking food (can transmit thermal energy) heating up food
- satellite transmissions ( due to being able to penetrate through earths atmosphere )
- also communications - 11Why are Micro waves good for satellite transmissionsBecause they can penetrate through earths atmosphere
- 12what are the dangers of Micro waves- can heat up body tissue
- also can cause painful burns - 13what are the uses of infrared?- heaters
- night vision
- TV remotes
and also Bulgar alarms - 14what are the dangers of infrared?-eye damage
- can cause burns
- increase Blood pressure - 15Why can infrared cause high blood pressuredue to heating (giving off thermal radiation)
- 16what are the benefits of infrared?security systems and heating
- 17what is visible light used for?Human vision
Photography - 18visible light is the only part of EM spectrum ........ can seeHumans
- 19what are the uses of UV waves?- Astronomy
- Treating cancer
- fluorescence - 20where does natural UV waves come from?the Sun
- 21what are the danger of UV radiation?- cause cancer (Skin cancer)
- premature aging
- eye problems even blindness due to overexposure - 22what are the benefits of UV radiation?- Treating cancer
- sterilization ( Kill bacteria )
- study space astronomy - 23what is the uses of X-rays?Medical equipment such as x-ray machines
-Radiation therapy (Killing cancer cells,shrink tumors) - 24What are the danger of X-Rays?is a type of ionising radiation
- cause mutations of genes
-cause cancer
- burn skin - 25what are the benefits of X-Rays?- fast diagnosis such as broken bones
- equipment very cheap - 26what are the uses of Gamma rays?Sterilizing food and medical equipment
- 27what are the dangers of gamma rays- can cause burns
- cause mutations of genes
- type of ionising radiation
- can kill - 28the EM spectrum goes up in increasing ........ and decreasing ..........frequency, wavelength
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- GCSE Physics Flashcards on Physics Topic 6 (Electromagnetic spectrum), created by Crawford _Studying on 09/06/2021.
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- Crawford _Studying
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