Flashcards
PHYSICS- The Electromagnetic Spectrum
Flashcards do conjunto (12)
- 1What are 2 common properties between all electromagnetic waves?All transverse waves.
All travel at the same speed in a vacuum. - 2List the parts of the electromagnetic spectrum, starting with the longest wavelength.Radio waves, Micro waves,infrared, visible light, UV, X-Ray, Gamma Rays.
- 3What do electromagnetic waves transfer?Energy.
- 4Dangers and Uses of Gamma Rays.Dangers:
Can cause mutations to DNA.
This may kill the cells, or cause cancer.
Uses:
Sterilise food and medical equipment.
Detect and treat cancer. - 5Dangers and Uses of X-RaysDangers:
Can cause mutations to DNA.
This may kill the cells, or cause cancer.
Uses:
Look inside objects including humans.
In airport security scanners. - 6Dangers and Uses of UVDangers:
UV in sunlight can damage skin causing sunburn.
Can cause skin cancer.
Can damage eyes.
Uses:
Detect forged banknotes.
Disinfect water.
Fluorescent lamps. - 7Dangers and Uses of Visible Light.Dangers:
Can damage eyes.
Uses:
Allows us to see.
Lights up rooms buildings and roads.
Photography. - 8Dangers and Uses of Infrared.Dangers:
Can cause burns, because it is heat energy.
Uses:
Cooking, communication, remote controls, security systems. - 9Dangers and Uses of Microwaves.Dangers:
Can heat the water inside our bodies, which can kill/damage cells.
Uses:
Mobile phones.
Communicate with satellites.
Cooking (microwave ovens). - 10Disadvantages and Uses of Radio waves.Disadvantages:
Easily intercepted.
Uses:
Broadcasting radio/TV programmes.
Communicating with ships, aeroplanes, satellites. - 11Name 3 types of ionising radiation.Alpha particles.
Beta particles.
Gamma rays. - 12What are the effects of ionisation?The energy can remove electrons from atoms to form ions, which are very reactive. Ions can cause mutations to DNA.
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- FlashCards sobre PHYSICS- The Electromagnetic Spectrum, criado por georgiawyld em 21-02-2015.
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