Week 22 Practice: Wave Properties and Speed

What is the formula for calculating wave speed?

• Wave speed = frequency x wavelength

• Wave speed = frequency / wavelength

• Wave speed = wavelength / frequency

• Wave speed = frequency + wavelength

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Why do sound waves travel faster in water than in air?

• Because water is denser than air

• Because water is less dense than air

• Because sound waves require a vacuum to travel

• Because sound waves are electromagnetic

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Which type of waves do not require a medium to travel?

• Electromagnetic waves

• Sound waves

• Mechanical waves

• Seismic waves

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What is the relationship between frequency and wavelength?

• Inversely proportional

• Directly proportional

• No relationship

• Exponentially proportional

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Which of the following waves has the shortest wavelength?

• Gamma rays

• Radio waves

• Microwaves

• Infrared

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What is the electromagnetic spectrum?

• A range categorizing electromagnetic waves based on frequency and wavelength

• A tool for measuring sound waves

• A device used in telecommunications

• A method for calculating wave speed

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Which waves are used in medical imaging?

• X-rays

• Radio waves

• Microwaves

• Infrared

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What is the speed of a sound wave that has a frequency of 250 hertz and a wavelength of 8 meters? 

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Which is the correct equation for calculating the speed of a wave?

• T = 1/f
• Speed= Wavelength x Period
• Speed = Wavelength/Frequency
• Speed= Wavelength x Frequency

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