Flashcards
P1
Flashcards do conjunto (25)
- 1what are the two types of lenses?-converging/convex
-diverging/concave - 2why does light refract?light refracts because one edge of the wave front first and either speeds up or slows down.
- 3what happens when light goes into a medium with a different optical density?it gets refracted
(unless it hits perpendicular) - 4what is the ionosphere?a region of the atmosphere around 100km high,
-reflects radio waves
-does not reflect microwaves - 5what are S-waves?transverse waves produced by earthquakes
-can only travel through solids - 6what is a transverse wave?a wave in which the particles vibrate perpendicular to the direction of travel
- 7what is an example of a transverse wave?-any EM wave
-water waves
- S-waves - 8what are the two types of waves?-longitudinal
-transverse - 9what is the relationship between the angle of incidence and the angle of reflection?they are the same
- 10why can you not see your reflection in everything?because when light is reflected of a rough surface it scatters in all directions
- 11what is amplitude?the distance from the line of equilibrium to the peak/
the maximum distance each point moves from the normal - 12what is the speed of light?3x10^8 m/s
300 000 000 - 13what equation connects: -time -speed -distancespeed = distance / time
- 14what is a longitudinal wave?a wave in which the particles vibrate parallel to the direction of the wave
- 15what equation relates: -period -frequencytime period = 1/frequence
- 16what is an example of a longitudinal wave?-sound waves
- P-waves - 17what is wavelength?the distance between two similar points on a wave,
such a peak to peak - 18what is the unit of frequency?hertz (Hz)
- 19what is frequency?the amount of waves/wavelength past a point in a second
- 20what are P-waves?longitudinal waves produced by earthquakes
-can travel through solids and liquids - 21list the EM spectrum, starting with lowest energy-radio
-microwaves
-infrared
-visible
-ultra violet
-x ray
-gamma ray - 22when would sound be refracted?when travelling through areas with different temperatures,
-cold air = slower
-hot air - faster - 23why do things appear coloured?depending on which wavelengths of light are absorbed and which are reflected
- 24what is the range of average human hearing?20 Hz-20 kHz
- 25what equation connects: -wave speed -frequency -wavelengthwave speed= frequency x wavelength
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- GCSE Physics FlashCards sobre P1, criado por Caoimhe Basketter em 23-01-2020.
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- Caoimhe Basketter
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