Flashcards
Waves
Flashcards do conjunto (10)
- 1What are wavesWaves are vibrations that transfer energy from place to place without matter (solid, liquid or gas) being transferred.
Some waves must travel through a substance(Sound waves and seismic waves are like this). - 2What are transverse wavesIn transverse waves, the oscillations (vibrations) are at right angles to the direction of travel and energy transfer.
Light and other types of electromagnetic radiation are transverse waves. All types of electromagnetic waves travel at the same speed through a vacuum, such as through space. - 3What are longitudinal wavesIn longitudinal waves, the oscillations are along the same direction as the direction of travel and energy transfer.
Sound waves and waves in a stretched spring are longitudinal waves. P waves (relatively fast moving longitudinal seismic waves that travel through liquids and solids) are also longitudinal waves. - 4Amplitude, Wavelength and frequencyThe frequency of a wave is the number of waves produced by a source each second. It is also the number of waves that pass a certain point each second
- 5Refraction and diffractionRefraction: When sound and light waves change speed and direction when passing through different boundaries.
Diffraction:When waves meet a gap in a barrier, they carry on through the gap. However, the waves spread out to some extent into the area beyond the gap - 6Sound wavesSound waves are longitudinal waves that must pass through a medium. Echoes are reflections of sounds. Light and other forms of electromagnetic radiation travel as transverse waves. These waves can travel through a vacuum, and they all travel at the same speed in a vacuum.
- 7The range of human hearing
- 8The electromagnetic spectrumThe electromagnetic spectrum is a continuous range of wavelengths. The types of radiation that occur in different parts of the spectrum have different uses and dangers, which depend on their wavelength and frequency.
This was first discovered in the 1800's by William Herschel when he discovered infrared radiation - 9What are the 7 types of electromagnetic radiation, in order of longest wavelength to shortest.Radio waves
Microwaves
Infrared waves
Visible light
Ultraviolet waves
X-rays
Gammer Rays - 10Communicating with waves: radio waves and microwaves
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- Gcse Physics FlashCards sobre Waves, criado por Darcie Hughes em 22-05-2015.
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- Darcie Hughes
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