6th grade Natural Science U.4 Sound
 It is a form of energy produced by luminous objects It is a type of mechanical energy It is a type of ultraviolet radiation It is a wave that bounces off of a vertical object What is sound?  Sound travels in.... Waves the form of radiation frequency ultrasounds  There are two types of waves: Infrasound and ultrasound Echoes and sonar Transverse and longitudinal  Sound waves are... Transverse Longitudinal  up and down Transverse waves move... side to side up and down Longitudinal waves move... side to side  solid, liquid or gas solid or liquid solid, liquid, gas or empty space liquid or gas Sound waves can travel through...  Sound cannot travel in empty space. True False  Sound travels at a speed of ... 300,000 km/s 340 m/s 340 Km/s 1,000 m/s An object that travels slower that the speed of sound An object that travels faster than the speed of light An object that travels faster than the speed of sound What is a supersonic object?  When an object passes the sound barrierit produces a loud noise called.... Sonar Echo Sonic boom Ultrasound  This property of sound refers to the volume of a sound: Timbre Pitch Intensity  This property refers to the musical tone of the sound: Intensity Timbre Pitch  This property depends on the amplitude of the sound wave: Pitch Intensity Timbre  This property depends on the frequency of the wave: Intensity Timbre Pitch  This property refers to the small variations that make every sound unique Intensity Pitch Timbre  It is measured in decibels: Intensity Pitch Timbre  It is measured in Hertz: Intensity Pitch Timbre  Electric impulse Sonic boom Echo Vibration When a sound wave reflects off of an object, it is called...  An echo can occur in very small rooms. True False  Ear ? Ear canal ? Outer ear ? Label the drawing: Eardrum ? Small bones ? Middle ear ? Inner ear ? Cochlea ? Auditory nerve ?  Which organ converts the vibrations into electric impulses? Cochlea Small bones Eardrum Ear canal  This machine uses sound waves to see how a baby develops inside the mother´s uterus. Sonar Infrasound Echo Ultrasound |
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