11. Procedure: Take a bell jar and a mobile phone. . (c) False. Say whether the following statements given below are true or false. 'Bats can catch prey even in the dark'. (False) (d) For human ears, the audible range is 20 Hz to 20,000 Hz. B ) It absorbs all the frequencies of light and does not reflect any back . _____are the only animals that have auricles. III. So, the sound wave gets smaller and smaller until it disappears. Still stuck? true or false - Not all mammals have auricles. a. b. Out of the following materials, the best conductor of sound is _____. False In order for sound from a speaker to reach a listener, air near the speaker must move to the listener. False. Physics. Light can travel through a vacuum. true or false - Moving the auricles in the direction of the sound helps the animal to hear sound more distinctly. Answer: a. correct b. false, when frequency decreases pitch decreases. An airtight bell-jar is inverted on a platform connected to a vacuum pump. the temperature of the gas It's a fact well-known enough to be the tagline to the 1979 sci-fi horror blockbuster Alien: "In space, no one can hear you scream." Or to put it another way, sound can't be carried in the empty vacuum of space - there just aren't any molecules for the audio vibrations to move . Space is usually regarded as being completely empty. vacuum . because there are no particles to carry the vibrations. State true or false. Sound does not travel at all in space. The Velocity of sound is high in gases than liquids. Amplitude determines the loudness of sound. Similar to sound, light can also not travel in vacuum. (b) The number of oscillations per second of a vibrating object is called its time period. Hope this is useful to you. b. Therefore, they need a medium to travel. 'Outer space' begins about 100 km above the Earth, where the shell of air around our planet disappears. (b) False The number of oscillations per second of a vibrating object is called its frequency. A sound wave is a mechanical wave that propagates along or through a medium by particle-to-particle interaction. Question 3. We can hear the sound clearly. False Almost everything that exists has a natural frequency. FALSE PO :) it's false Advertisement So, are we to presume that the walls are vibrating? Solution for 1- Sound waves cannot travel in vacuum? (True) Explanation: - Sound needs a medium to travel. The molecules are too far apart to transmit sound. 14. Sound cannot travel through (a) air (b) water (c) iron (d) vacuum Answer Question 9. (True) Extract the air from the container by switching on the vacuum pump. SURVEY . If false give the reason. Answer. A ) It reflects the black wavelength of light . Exploding bombs, crashing asteroids . Vacuum is an enclosed place in which there are no molecules or matter. There are no particles in a vacuum so sound can not move through a vacuum. Of course, if someone were in space without any protection against the vacuum, hearing any sound waves would be the least of their problems. Sound cannot travel through vacuum. True . Higher the frequency of vibration, the higher is the pitch, and shriller is the sound. This is why light from distant stars can travel . answer choices . 30 seconds . How does the ear work? Answer: False - Sound cannot travel through vacuum. State whether the following statements are true or false: (a) Sound cannot travel in vacuum. A black paper appears black because . In vacuum, where there are no atoms or molecules to vibrate. alternatives . 2. III. (d) The lower the frequency of vibration, the higher is the pitch. That explains why when a star explodes, we cannot hear it. True. 2 . Ungraded . No, they travel. (d) The lower the frequency of vibration, the higher is the pitch. Thank you. False. b. a . We hope the given NCERT MCQ Questions for Class 8 Science Chapter 13 Sound with Answers Pdf free download will help you. Sound does not have the required energy or speed to travel through a vacuum. Top Amplitude Amplitude is the maximum displacement of a particle from its mean position in either direction. answer choices . closed Jun 25, 2020 by BhratJha State whether the following statements are true or false: (a) Sound cannot travel in vacuum. A vacuum is defined as space that contains no matter. Describe an experiment to show that sound cannot travel through vacuum. (c) If the amplitude of vibration . For example, Space is an open vacuum. (c) If the amplitude of vibration is large . E20.24. Find an answer to your question sound cannot travel through vacuum true or false shivanshrai287 shivanshrai287 09.10.2020 Physics Secondary School answered Sound cannot travel through vacuum true or false 2 See answers george444emmanuel george444emmanuel Answer: True. Where is the cochlea located? star. Light can travel through vacuum, so we can see the exploding meteor but cannot hear the explosion. Sound waves cannot travel through a vacuum. Q. 12. What is NOT true of how sound travels? The sound in the audible range is called (a) ultrasonic sound (b) sonic sound (c) subsonic sound (d) light sound Answer Question 10. space) therefore in fact you should not hear the . True or False : All electromagnetic waves travel at the same rate in a vacuum . Sound does not travel faster through a solid than a gas. If the walls are vibrating, you could attach accelerome. (c) If the amplitude of vibrations is large, sound is feeble. (b) The number of oscillations per second of a vibrating object is called its time period. Answer 3. How ? It is a measure of the intensity of the sound. Characteristics of Sound Waves. Since vacuum does not have a medium, sound cannot travel through vacuum. Sound travel through many material such as water& steel.Some insulating materials absorb much of the sound waves preventing the waves from generating the material.or compression waves in the air When a object . answer explanation . True or false: Sound can't travel through a vacuum. -5°C 0°C 10°C 15°C. Time period is the time taken by the wave to one complete oscillation (c) False Loudness of sound is proportional to the amplitude. Tim Peake uses an alarm clock to help explain how sound travels When a sound wave meets a boundary it . Because sound is just vibrating air, space has no air to vibrate and therefore no sound. Additional information: Sound is defined by the following attributes SURVEY . Sound cannot travel through a vacuum. Top Oscillation It is defined as the complete movement of particle about its mean position. Where is the ear drum located? It's an average sized star. An example of electromagnetic radiation is radio waves. Question State true or false. If false, rewrite it by making necessary changes. Sound needs a material medium like solid ,liquid orgas to travel and be heard because the molecules ofsolid, liquid and gases carry sound waves from one place to another. True SURVEY . The velocity of sound is independent of temperature. The pitch of a sound depends in the frequency of the waves. The quiz below is designed to test your basic understanding of mechanical waves. answer choices . (False) Explanation: - The number of oscillations is frequency. 0. Physics Suggest Corrections 0 Sound can travel through solids, liquids, gases, and even a vacuum. Sound requires a medium to travel through. What is pitch? a. energy only b. both mass and energy c. neither… The speed and the physical characteristics of sound largely varies with the change in its ambient . EXPLANATION: Sound cannot travel through a vacuum. Do electromagnetic waves travel faster through solids liquids or gases? 9 8. A black paper appears black because . (b) Sound is a form of energy. Noise pollution may pose health problems for human beings. How loud or soft a sound is ; How high or low a sound is ; The medium in which the sound travels ; A good curve ball; 7 6. True . The low notes on a piano always produce _____ sound waves than the high notes. If you are sitting in a space ship and another space ship explodes, you would hear nothing. 120 seconds . A Quick Mechanical Waves Quiz: A mechanical wave is the type of wave that needs a medium to be transmitted, as waves of this type do not travel through a vacuum. This is because sound cannot travel through _____. Since electromagnetic radiations do not require a material medium for their propagation and can travel through vacuum, the statement that electromagnetic radiation cannot travel through a vacuum is False, option B.. What is an electromagnetic radiation? Where is the . This is because they propagate mechanically by moving material particles. (b) False. True or false: Sound can travel through a vacuum. Reason: Sound can not travel in a vacuum. Space isn't actually completely empty, there are large areas of gas and dust that do have the potential to carry sound waves. In space there is vacuum. Speed of sound from various states of matter is as follows - solid > liquid > gases Thanks dear for asking. Which drawing represents a louder sound? Our solar system's sun is bigger than most suns? An electric bell fitted into the jar is operated but its sound cannot be heard. As a mechanical wave, sound requires a medium in order to move from its source to a distant location. This is TRUE. 120 seconds . With no air to scatter sunlight and produce a blue sky, space appears as a black blanket dotted with stars. Sound cannot travel in vacuum. Sound is a form of energy which is transferred by vibrat. 13. Some suns are up to 100 bigger! It will take less than a minute and is a true or false question. Sound is a regular mechanical vibration that travels matter as a waveform.It consists of longitudinal or compression waves in matter. The vacuum of outer space has essentially zero air. Excessive or unwanted sounds lead to noise pollution. Suggest Corrections. Published: February 14, 2013. False. False. In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the wave is not interacting with anything else. Answer: The supersonic jet planes fly in the air. Similar to sound, light can also not travel in vacuum. The time period is the time taken to complete one oscillation. The sum of the interior angles of a quadrilateral equals 360°. Ocean waves are caused by energy shifting the water, while sound waves can travel through many mediums, including air and water. The speed is the same. Report an issue . (True) (b) The number of oscillations per second of a vibrating object is called its time period. True or False: Sound travels better through solids than through liquids. Q. (False) (c) If the amplitude of vibration is large, sound is feeble. False. False : 6. Answer. The sound could not travel in solid. Answer: It is False because Heat can not travel through the vacuum. A True B False Solution The correct option is B False Light can travel through vacuum but sound cannot. punineep and 16 more users found this answer helpful. Time period is the time required to complete one oscillation. Answer: False. (g) Waveforms of two different stringed instruments can be the same. Light can travel through vacuum but sound cannot. If you are in a vacuum, then we can assume you are surrounded by walls. (d) Larger is the amplitude, feeble is the sound. (False) Explanation: The number of oscillations per second is frequency. Again, call the number of the cell phone. In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this medium. This is because sound waves are vibrating waves. 8 7. A ) True. Radio waves travel perfectly fine through a vacuum because they are a type of electromagnetic wave (light), and electromagnetic waves do not need a medium to travel through. Electromagnetic radiations do not require a material medium for their propagation, and hence can travel through vacuum. The pitch of a sound that you hear depends on the sound wave's; The pitch of a sound that you hear depends on the sound wave's; Which of the following is true of sound waves . What is a pitch? What's making noise for you to hear, or not hear, as is the case? Aim: To prove that sound cannot travel through vacuum and it needs a medium for propagation. Sound, however, cannot travel through a vacuum: it always has to have something to travel through (known as a medium), such as air, water, glass, or metal. Photo: Sensing with sound: Light doesn't travel well through ocean water: over half the light falling on the sea surface is absorbed within the first meter of water; 100m down and only 1 . Q1) True and False (a) Sound can travel in vacuum. Sound: (a) Sound requires a medium to travel . Sound can travel through solids, gases, liquids and even vacuum. Yes, sound can travel through most mediums including solids and However, it cannot travel through a vacuum. (True) Explanation: Sound needs a medium to travel. Explanation: Sound waves are travelling vibrations of particles in media such . Get 1-on-1 help from an expert tutor now. u are almost correct but the explanation is not to the point FALSE - Sound is a mechanical wave which moves due to particle interaction. When frequency of sound increases, pitch decreases. Sound cannot travel through a region of space that is void of matter (i.e., a vacuum). !An electromagnetic radiation is a radiation which results from.the interaction of the electric and magnetic fields. There are various types of medium through which sound waves can move like solids, liquids, gases, plasma, etc. (a) Sound cannot travel in vacuum. Sound can travel through liquids. Saturn is not perfectly round? False. Sound can travel through: (a) gases only (b) solids only . highness or lowness of a sound. What is an electromagnetic radiation? False. Do all electromagnetic waves travel at the same speed in a vacuum Sound travels through a medium (gas, liquid or solid). So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate. It would be too low or too high for our ears to perceive. False. Now the reason why some colleges claim that you should think before asking, is due to the fact that the vacuum is defined as state without any. False . Light waves travel faster than sound waves true or false; High-frequency sound waves are to _____ as low-frequency sound waves are to _____. That ought to also implicitly answer your second question: since a sound wave is a wave of air pressure, sound can't exist at all in a vacuum (hence, why "in space, no one can hear you . Light waves travel faster than sound waves true or false; High-frequency sound waves are to _____ as low-frequency sound waves are to _____. False. What does the unit 'Hz' stand for? When an object vibrates very rapidly, a large number of sound waves are produced each second. Since vacuum is devoid of any medium, sound cannot travel through it. Hence, sound can't travel through vacuum. Which drawing represents a high pitch? Sound cannot travel through vacuum. Sound will travel fastest in air at _____. When frequency of sound increases, pitch decreases. But this is not true. True or False: Can sound travel through a vacuum (space). B ) It absorbs all the frequencies of light and does not reflect any back . e. FALSE - Sound waves (like all waves) will travel slower in more dense materials (assuming all other factors are equal). True . Q. b. True. Sound can travel through solids. Sound is a kind of longitudinal wave and mechanical wave. True Sound can't be carried in the empty vacuum of space because sound waves need a medium to vibrate through such as air or water. 22 . a. Therefore sound cannot travel through vacuum where there is no molecule or atom to induce vibrations. But although sound can travel through Earth, it can't travel from Earth to Mars because there's essentially no matter (gases, liquids, solids) in between the two planets for it to travel through. heart outlined. If false, rewrite it by making necessary changes. Sound needs a medium to travel in. Space is a vacuum, which means there are barely any air particles. True or False: Can sound travel through a vacuum (space). Until recently, we thought that since there is no air in space, that no sound could travel and that is still true but only up to a point. True Even a steel bridge can collapse because of resonance. Question 2. 1. In the following statements, tick 'T again t hose which arse tare, ara 'F' against the which are false: (a) Sound cannot trarl in vacuum. Tags: Question 7 . Waves created by Earthquake are Infrasonic. This experiment shows that sound cannot travel through . sound class-8 1 Answer ← Prev Question Next Question → Sound cannot travel through vacuumor empty space because vacuum has no molecules which can vibrate and carry sound waves. (b) The number of oscillations per second of a vibrating object is called its time period. Attempts should be made to minimise noise pollution. Sound cannot travel in vacuum. (TRUE OR FALSE) 2- Wave motion in a medium transfers ? B ) False. True. True. On the other hand, light waves are electromagnetic ones which can indeed travel without the help of matter. Q. B ) False. a. Like all mechanical waves, sound also needs a medium to travel. They need a physical medium to travel through. f. TRUE - This is the definition of elasticity. True or False : All electromagnetic waves travel at the same rate in a vacuum . The number of oscillations per sound of a vibrating object is called its time period. Tags: Question 6 . asked Oct 13, 2021 in Physics by Waman (53.8k points) closed Oct 16, 2021 by Waman Say whether the following statements given below are true or false. What do we use the unit 'dB' for? Sound cannot travel through vacuum. Shriller sound has more frequency. This time no sound is heard because there is no air (medium) to help the propagation of sound. Usually one refers to sound as a density wave. Question 11. Sound is also defined as the longitudinal wave that is a combination of compression and relaxation. A black paper appears black because . It cannot travel in a vacuum. True or False 6 5. Hence the given statement is false. a. b. (c) Sound can only be produced by vibrating bodies. True or false? (a) True Sound needs a medium to travel. Question 1. Question 8. You can't hear sounds. Answer (1 of 81): This is because light is an electromagnetic wave and sound is a longitudinal and mechanical wave. Tags: Topics: Question 14 . The number of oscillations per second of a vibrating object is known as its frequency. Give it a shot and see if you need more reading. Sound cannot travel through vacuum. Presence of a medium is a must for the movement of sound waves. True. (c) If the amplitude of vibrations is large, sound is feeble. Since sound can travel through air, we can hear then flying. During a thunderstorm, you hear the thunder before you see the lightning. Answer: 1. the intensity of a vibration . (e) The frequency is measured in hertz. Answer - True Explanation - Sound waves are mechanical waves. Answer. Sound waves cannot travel through a vacuum. True. Sound can travel through the air. The peaks and troughs represent air pressure, and a sound wave is a wave of high and low air pressure moving through air; the particles look more like this. In vacuum nothing is present. Sound can travel through the vacuum of space. Sound will not travel through a vacuum. When the air is removed the person will not be able to hear the sound because sound cannot travel through a vacuum. Waves created by Earth Quake are Infrasonic . (f) Loudness depends on frequency. Switch on the music in the mobile phone and place it in the jar. Thanks 10. star. Give a brief description. heart outlined. True or False. . Ccd detectors gather light 10-20 times faster than the most sensitive photographic film. Question 10. Sound Can Travel Through Space After All - But We Can't Hear It. A ) True. A black paper appears black because . Light can exist almost anyplace. Find more answers (1) Light travels faster than sound therefore you should see the explosion before you hear it and (2) sound cannot travel through a vacuum (i.e. Sound cannot travel through vacuum. In contrast, light waves can travel through a vacuum, and do not require a medium. Do all electromagnetic waves travel at the same speed in a vacuum Sound needs either solid, liquid or gas to propagate and hence it is called a mechanical wave. Materials Required: Bell jar, mobile phone and vacuum pump. E20.16. (b) The number of oscillations per second of a vibrating objet is called its time period. 22 . A ) It reflects the black wavelength of light . The correct option is B. Sound can travel through space? !An electromagnetic radiation is a radiation which results from.the interaction of the electric and magnetic fields. Sound cannot travel in vacuum. Time period is the time taken to complete one oscillation. True or false: (If false give the reason) Sound can travel through solids, gases, liquids and even vacuum. What does the unit 'dB' stand for? Answer (1 of 20): Not by any standard convention. Elasticity is related to . Advertisement Still have questions? Speed is (a) (b) (c) Distance travelled × Time (d) Time + Distance travelled Answer Question 11. Tabla is a musical instrument. So it does not contain any particle using which the sound energy can travel. 22 . We can hear the supersonic jet planes flying. Now call the number of the cell phone so that it rings. (b) The number of oscillations per second of a vibrating object is called its time-period. The wavelength = speed/frequency is halved. 4. Sound cannot travel in a vacuum. glass air Half-n-half Clue : 7. 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