How does the sound of Thunder propagate in warm and cold air?
Thunder is the term that describes the extreme heat generation due to a lightning flash within a fraction of a second. So what happens during lightning is that the air of the surroundings gets heated up to a temperature of about 30,000°C within an instant. This results in the expansion of air molecules due to exposure to heat. The rate of expansion is dependent on the rate of the heating time period. The faster the air heats, the faster is the rate of expansion of air molecules. This phenomenon is known by the term explosive expansion or thunder. This instant expansion of air results in an immediate contraction of the air molecule to its front resulting in the formation of shock waves. These waves bear similar resemblance with the likes of shock-boom produced during a fireworks explosion.
Sound waves are known to travel faster in warm air than they do in cold air. This is because the molecules of air within the warm air move faster with higher vibrational energy. When the temperature of the air keeps on decreasing with height, thunder is audible up to a range of about 10 miles.
But there exists a phenomenon during winter when the air temperature increases with height and the temperature near the ground surface are cold. This results in a phenomenon known as inversion. the sound waves are refracted back towards the surface of the earth in such scenarios since they travel on faster velocity in the warmer air above than the cold air below. This results in the generation of an additional sound which amplifies the sound of thunder. Thus during winters when the thunderstorms generate in warmer air above a cooler air near the earth's surface, louder thunder sounds are perceived by the ear.
A sound wave with a pitch of 261.6Hz (middle C) is played in a warm concert hall, where the air temperature is 25∘C. A passer-by in the cold winter street outside hears the note coming through a window. The air temperature outside is -5∘C. a.) What will be the frequency of the sound heard outside in the cold air? Give an answer accurate to one decimal point. (Hz) b.)What will be the wavelength of the sound wave in the warm...
How long does it take a cold front and a warm front to travel from west to east across a state 511 miles wide? (a) a cold front (b) a warm front
Which of the following is a consequence of the properties of warm and cold air? Group of answer choices A. Sinking cool air warms and loses moisture and precipitation, causing bands of dry climate across the globe. b. Warm air sinks, cool air expands and rises; this results in areas of the globe with no air circulation. c. The atmosphere is warmer the further up away from the earth; this causes a higher angle of incidence of sunlight at the...
Explain why sound travels faster in warm air than in cool air. Suppose the room temperature (in degrees celsius) was 10% higher, how would your results change?
why does a pool at 72 degrees F feel cold, but air at the same temperature feel warm?
Sound propagating through air at 35 degree C passes through a vertical cold front into air that is 4.0 degree C. If the sound has a frequency of 2100 H_z, by what percentage docs its wavelength change in crossing the boundary?
1) Warm air passing over cold water off the coast of San Francisco produces fog in the summer. Given what we know about convection cells due to cool ocean and hot land, hypothesize how fog created off the coast of San Francisco moves toward east towards the Central Valley.
4) The speed of sound in air is 340 m/s. How long does it take for the sound to reach you, it you stand one kilometer away from the source of sound?
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Can someone please help with these 3 parts?
A sound wave with a pitch of 261.6Hz (middle C) is played in a warm concert hall, where the air temperature is 25°C. A passer-by in the cold winter street outside hears the note coming through a window. The air temperature outside is -5°C. Part a What will be the frequency of the sound heard outside in the cold air? Give an answer accurate to one decimal point. Enter answer here 0...