RIPPLE TANK PROJECT

WAVES

• They are a disturbance in an object.
• The energy they produce push objects.

EVERYDAY WAVES

• Sound is a wave that moves through matter
• Light is a kind of wave that helps us to see.
• We also use waves (microwaves) to cook our food faster.

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WAVES

• Crest: Highest point of transverse wave.
• Trough: Lowest point of transverse wave.
• Compression: Most dense area of longitudinal waves.
• Rarefaction: Stretched out area of longitudinal waves.
• Amplitude: The distance the particles move from rest.

WAVES

• Period - The time is takes for a full wavelength to pass a certain point.
• Frequency -The number of vibrations per second.

Transverse wave: this is a wave vibrating at right angles from the direction of its start to finish
- Ocean Waves

Longitudinal: Is a wave that cause the particles to vibrate parallel to the direction that the wave travels.
- Sound Waves

SPHERICAL WAVES

• A spherical wave is generated by a point-like source
• All share the same displacement, such as crests on a water wave
• Wave length: 1.2 cm
• Wave frequency: 2 waves/second
• Wave speed: 2.4 cm/second

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PLANE WAVES

• Form parallel planes that are all traveling in the same direction
• Perpendicular to the plane’s surfaces.
• Wave length: 2 cm
• Wave frequency: 3 waves per 1 second
• Wave speed: 6 cm/second

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Angle of incidence:
A measure of deviation of something from "straight on".

Angle of reflection- The angle between the reflected ray and the normal.

Law of reflection- The behavior of the light as it reflects would follow

Dual pin interference: When 2 pins are aligned in the water.

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Double slit interference: A wave is split into two separate waves that later combine back into a single wave.

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Destructive interference: when the peaks of one wave meet with the troughs (lowest points) of the other wave.

Constructive interference - when two or more waves are superimposed such that the peaks meet.

WAVE DIFFRACTION

• Involves a change in direction when passing an obstacle
• Water waves have the ability to travel around corners, around obstacles and through openings
• This ability is most obvious for water waves with longer wavelengths.