____ It is harder to hear someone speak when you are far away because the intens

Question

____ It is harder to hear someone speak when you are far away because the intensity of the sound decreases with distance. ____ When a solid melts into a liquid, the temperature of the liquid is greater than temperature of the solid. ____ A set of wind chimes are metal tubes of various lengths. The tube with the longest length plays the lowest frequency. ____ If the frequency of a sound increases, the speed of the sound wave increases. ____ On the Celsius scale, there are 180 degrees between the freezing point and steam point of water. Matching. Place the letter of the correct answer next lo the statement. Knelt choice will be used only once. heat temperature internal energy thermal expansion phase change specific heat latent heat condensation sublimation evaporation Celsius Fahrenheit wavelength tension linear density intensity decibels underdamped resonance overdamped Doppler Effect constructive destructive standing wave beats node antinode Harmonics Transverse Longitudinal energy ____ Type of interference when two waves are exactly out of phase. _______ The phenomenon that occurs when sounds of different frequency are played at the same time. _______ The phase change from a solid directly to a gas. _______ The increase in length of an object because its temperature has increased _______ The type of wave where the disturbance is perpendicular to the wave motion _______ When thermal equilibrium is reached, this quantity is the same for all objects. _______ The change in frequency due to the relative motion between an observer of the sound and the source of the sound.

Explanation / Answer

#9 True-by inverse square law doubling the distance decreases the sound intnsity level by 6 dB.

#10 True Every solid when melts the liquid temperature will be more.

#11 True frequency is inversely proportional to L (length)

#12 True f=v/lamda  therefore if frequency increases speed v also increases

#13 False 100-0=100

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