Presentation on theme: "What is the purpose of a wave?"— Presentation transcript:
1 What is the purpose of a wave? To carry energy through matter or space.Or, to transfer energy
2 Mechanical waves require a medium and electromagnetic do not. What waves require a medium to travel or do they all require a medium to travel?Mechanical waves require a medium and electromagnetic do not.
3 What are longitudinal waves? Waves that vibrate parallel to the direction of the wave.
4 What are electromagnetic waves? Waves of oscillating electric and magnetic fields
23 What is the law of reflection? The angle of incidence of a light ray is equal to the angle of reflection of the same light ray.
24 List the waves included in the electromagnetic spectrum from low frequency to high frequency. Radio waves, microwaves, infrared waves, visible light, UV , X-rays, and Gamma
25 Angle of IncidenceNormalAngle of ReflectionReflecting Surface
26 Describe three ways light is related to waves. To transfer energyTravel in wavesColor is reflected as light wavesProduce interference waves like water
27 Red, Orange, Yellow, Green, Blue, Indigo, Violet ROY G BIV Name the colors of the visible light spectrum from longest wavelength to shortest wavelength. What is the acronym used to help remember the order of the visible light spectrum?Red, Orange, Yellow, Green, Blue, Indigo, VioletROY G BIV
28 Sound is a series of atmospheric pressure waves produced by what? Vibrations