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Physics Light and Wave Flashcards
Fichas del conjunto (21)
- 1What is a wave?A wave is a vibration that transfers energy.
- 2What is the relationship between the direction of travel and the direction of vibration in a transverse wave?The direction of travel is perpendicular to the direction of vibration
- 3What is the relationship between the direction of travel and the direction of vibration in a longitudinal wave?The relationship is that the direction of travel is parallel to the direction of vibration
- 4What is wavelength?A wave length is measured from the top of one wave to the top of another wave not the top of one wave to the bottom of another.
- 5Give examples of a transverse wave:Examples of transverse waves are light and a rope.
- 6Give examples of longitudinal waves:Examples of longitudinal waves are sound an a slinky.
- 7What is compression in longitudinal waves?Compression is when the waves are tightly packed together.
- 8What is rarefaction in longitudinal waves?Rarefaction is when the waves are loosely packed.
- 9What is frequency (f)Frequency is the number of waves past a point in 1 second.
- 10What is time period (T)Time period is the length of time for 1 wave (to pass a point)
- 11What is light?Light is a wave.
- 12How should rays of light be drawnThey should be drawn with a ruler and on the there should be arrows pointing which way the light is travelling.
- 13How do we see things?Light comes from the light source (e.g. the sun, a lamp, etc.) then it bounces off the object and into our eyes.
- 14What is the relationship between the height of an image and the object distance?The relationship is that the shorter the object distance, the larger and greater the height of the image
- 15Why do we see things upside down when we look through a pinhole camera?We see things upside down as the rays of light cross each other.
- 16What is the law of reflection?The law of reflection i that when light reflects off a smooth surface the angle of incidence = the angle of reflection
- 17In what direction does light travel?Light travels in a straight line.
- 18Why does a sheet of glass give a clear reflection?It has a smooth surface and is very reflective
- 19What is the one thing in common that all substances that light can bass between have?They are all transparent
- 20What is refraction?It is when light bends when it passes between media.
- 21Why does light bend when it passes from one medium to another?It happens as it slows down
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- Fichas sobre Physics Light and Wave Flashcards, creado por Hubert Selormey el 08/03/2019.
- Creado por
- Hubert Selormey
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