2797498
Descripción
Test por Genjo Pringle, actualizado hace más de 1 año
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Creado por Genjo Pringle
hace casi 9 años
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Pregunta 1
Pregunta
Which material does sound travel fastest in?
Respuesta
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Wood
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Air
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Metal
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Soft tissue
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Vacuum
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Cork
Pregunta 2
Pregunta
Why does sound move faster in metal than in air?
Respuesta
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The particles are closer together in a solid than in a gas
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The particles are further apart in a solid than in a gas
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It doesn't travel faster in metal than in air
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The particles have more energy and therefore can vibrate faster
Pregunta 3
Pregunta
What range of the frequency of aa sound can humans hear?
Respuesta
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20 - 2,000 Hz
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20 - 20,000 Hz
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20- 2,000,000 Hz
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20 - 200,000 Hz
Pregunta 4
Pregunta
What is the name of the purple part of the ear?
Respuesta
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Ear canal
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Ear drum
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Outer ear
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Cochlea
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Ossicles
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Eustachian Tube
Pregunta 5
Pregunta
Is - vocal chords, air, ear drum, cochlea, cochlea hairs, ossicles - the correct order in which you hear a sound?
Respuesta
- True
- False
Pregunta 6
Pregunta
What are the names of the three ossicles
Respuesta
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Hammer
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Anvil
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Cochlea
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Stirrup
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Cochlea hairs
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Middle ear
Pregunta 7
Respuesta
-
Rarefraction
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Compression
Pregunta 8
Pregunta
Which of the following describes Frequency?
Respuesta
-
The height of the wave from the black line
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The number of waves travelling past a point (Hertz)
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The distance between two identical points on the curve
Pregunta 9
Pregunta
Which of the following are good conductors of heat?
Respuesta
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Bubble wrap
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Tin foil
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Steel
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Iron
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Wood
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Felt
Pregunta 10
Pregunta
An insulator is a material that doesn't conduct heat well.
Respuesta
- True
- False
Pregunta 11
Respuesta
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Conduction
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Convection
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Radiation
Pregunta 12
Pregunta
Which of the following are true about Infrared rays?
Respuesta
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They can travel through a vacuum
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They can travel through opaque materials
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They can be reflected
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They travel at 300,000,000 m/s
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They travel at 30,000,000 m/s
Pregunta 13
Pregunta
What would you use to insulate a backer of water?
Respuesta
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Conductors
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Insulators
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Both
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