2. Waves
• Wave :
A disturbance that carries energy and travels in
a repeating pattern.
Ripples on the surface
of water Sounds waves traveling air
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3. Waves
• Light waves can travel through empty space,
but other wave types need a material to travel
through. This material is called a medium. For
example, sound waves need a medium.
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4. transverse wave
• transverse wave :
A wave that the particles vibrate perpendicular
to direction of wave .
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6. Wave Characteristics
• Amplitude:
The greatest height of a wave in its resting
position.
• Wavelength :
The distance between similar points on a wave.
• Frequency :
The number of times a wave repeats itself in a
certain amount of time.
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7. Longitudinal wave
• Longitudinal wave :
A wave that the particles vibrate in the same
direction of wave
Particles motion
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9. Lesson 2: Patterns of Waves
• wave period :
the amount of time it takes for a wave to
complete one back-and-forth motion.
Or The time it takes a wave to move one
wavelength.
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11. • circular waves
A disturbance at a single point that moves
outward in all directions.
plane wave :
A wave that is made when a line of matter is
disturbed.
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12. circular waves
• circular waves
A disturbance at a single point that moves
outward in all directions.
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