2020 4A3 Sound Padlet by Hui Kuan Tan https://padlet.com/huikuan_tan/oiyd2893dcyg Made with a wink and a smile en-us 2019-12-04 05:35:35 UTC 2021-04-09 12:40:19 UTC hello@padlet.com Instructions huikuan_tan https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/419466851 1. Double on the screen to type in your response.

2. Key in your response in the following format: 

S: State the mistake (related to Physics) in the movie clip (see below) in ONE sentence

E: Elaborate on the mistake in your own words.

E. Use Examples to show what you mean.  (you can give counter examples also) You can insert videos/pictures to explain

Q. State one or two Question on the concept of Sound. 
]]> 2019-12-04 05:35:48 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/419466851 The explosions and lasers made sounds when the setting was in space. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427261869 Space is filled with vacuum, so there should not be any sound that can be heard due to the absence of matter since sound waves can only be transmitted through matter. Due to the absence of a medium to transmit sound waves, electromagnetic waves need to be used instead to transmit signals to others while in space. Can lasers actually create sound even in air?]]> 2020-01-02 04:42:41 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427261869 Sound should not be heard in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427265422 Sound travels through vibrations in the air molecules, which is picked up my our ears. Since space is a vacuum, there is no air and thus, no medium for the sound to travel to our ears. This can be shown in the experiment below, whereby the lack of air in the vacuum causes the sand to stop vibrating, showing that sound is no longer able to travel from the speaker to the sand. If there was air in space, what would the surroundings sound like?]]> 2020-01-02 05:35:06 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427265422 Sound was heard in space which should not happen. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427266241 Sound requires a medium to travel through, in order to hear sound there has to be something for sound to travel through. Sound travels by vibrating the particles in the medium so that they bump into each other. In the vacuum of space, there are no particles to vibrate, so sound cannot travel through space. For example in the video attached below, the sound from the Bluetooth speaker could not be heard due to the lack of air particles in it.]]> 2020-01-02 05:48:28 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427266241 Sound was evidently heard from the video which was from space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427274090 Sound waves requires a medium to travel through. However, space consists of vacuum and there is no air, thus no sound should be heard since there is no medium in space for sound waves to transmit. For example, when a rocket travels up to space on earth, a lot of noise is generated. However, when in space, there is no sound produced. When would sound be harmful to humans and animals?]]> 2020-01-02 07:58:41 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427274090 The eisence https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427278138 2020-01-02 09:02:37 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427278138 Sounds made by the weapons in the video should not be heard as the sounds were made in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427278426 As space is a vacuum, no sound made in space should be heard under any circumstance since sound requires a medium to be transmitted. Due to the fact that space is a vacuum, there is no possible medium for sound to be transmitted in space and thus the mistake in the video is that sound can still be heard in space. An example is the sound made by the weapons, for example explosions, can be heard clearly in space when that should only happen is if the sound was produced within the atmosphere. then my question is, what determines the frequencies of the sounds which a human can hear?]]> 2020-01-02 09:06:23 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427278426 Sounds from the lasers and explosions should not be heard in space. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427280606 Sound waves requires a medium to be transmitted because it travels through the vibrations of atoms or molecules. Since space is a vacuum, sound waves cannot travel and thus the battle should be completely silent. (aside from the scenes inside the spacecrafts where there is air to act as the medium)

In the video, a GoPro was put in a vacuum chamber and could not record any sound made by the person screaming from the outside.

If sound waves are vibrations propagating through a medium, how does the brain interpret it as an audible thing?
Do living things perceive the same sounds differently?]]> 2020-01-02 09:32:09 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427280606 Sounds were heard despite them occurring in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427286739 Explosions and gunshots could be heard throughout the video despite it taking place in space.

Sounds waves travel through a medium by vibration of particles. As space is a vacuum, there is a lack of vibrating particles. Hence, sound cannot be transmitted through space.

In the video, a speaker was placed in a vacuum and sound could not be heard.

How does our ears transmit sounds to our brain?


]]> 2020-01-02 10:57:41 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427286739 Explosions and laser guns should not make any sound https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427302145 Space is a vacuum and sound requires a medium to travel. Thus, the explosions and the laser guns should be silent.

In the experiment below, the man placed a microphone into a vacuum chamber to test if it can still detect any sound in the vacuum and the results show that it cannot.

How is sound different from other types of waves like ultraviolet and radio waves?

Given that it is possible to adjust the frequency of sound (i think?), why is it not possible to convert sound to other forms of waves?]]> 2020-01-02 13:27:52 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427302145 Sound should not be able to be heard through the battles in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427305148 Sounds could be heard from the fight in space. Sound waves are longitudinal waves which makes use of vibrations of particles in order to transmit. These longitudinal waves require a medium to transmit due to nature or p-waves. Without the presence of matter in the vacuum of outer space.Thus, the sounds that explosions and the laser guns emitting should not be able to be heard.

For example many sounds that are emitted due to massive collisions in space cannot be heard due  to the absence of matter as a medium for transmission.

Q.
If sounds transmit more easily in solids, why does it not sound clearer than through air

]]> 2020-01-02 13:44:53 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427305148 Sounds cannot be heard in a vacuum https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427326611 In the video, there were sounds of explosion which could not have existed due to the fact that it was held in space which meant that there was no way for the sound waves to travel as there was not any particles in the vacuum in space or a medium for it to be transmitted. For example, sound waves requires the vibrations of particles in the atmosphere to transmit, that is why we are capable to hearing different things on earth. ]]> 2020-01-02 15:23:23 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427326611 Sound is unable to travel through space which is a vacuum https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427332503 In the clip, sound can be heard in space. As space is a vacuum, sound is unable to travel through it due to the absence of particles to transmit sound. This is due to sound being transmitted by particles vibrating and colliding into each other. The video below demonstrates how sound is unable to travel in a vacuum due to the lack of a medium (solid, liquid, or gas).

How then does a sound cable transmit sound?

]]> 2020-01-02 15:47:53 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427332503 Sound cannot be heard in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427421884 In the video, the sound of lasers and explosions could be heard, however it should not have been as space is a vacuum. Sound is transmitted through a medium, by the vibrations of particles. Thus, sounds cannot be heard in space as there is no medium for the vibrations to travel through and be heard. For example, the air particles around us are able to vibrate, allowing sound waves to travel through air so we can hear it. ]]> 2020-01-03 02:12:37 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427421884 Sound cannot be heard in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427433968 Fighter jet rounds and explosions could be heard in space, even though it is a vacuum. Sound has to be transmitted through a medium, but in outer space, there are no particles for the sound to travel through. As such, sound cannot be heard in space. For instance, we can hear sounds here on Earth as the vibrations travel through the air molecules to our ears. Hence, the medium through which the sound travels is air.

Question: How do density and other properties of a material affect the ability of sound to pass through it?]]> 2020-01-03 04:40:50 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427433968 Sound cannot travel through space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427444320 In the clip, explosions can be heard from distances away. However, this is not possible because the space is a vacuum, and the density of atoms in space is minimal so atoms cannot string together vibrations. As a result, our eardrums will be unable to pick up any sound frequencies. Therefore, even if there were explosions, they would have been silent.
Question: Are atoms the only medium which can transmit sound?]]> 2020-01-03 07:30:48 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427444320 S https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427450768 2020-01-03 08:37:57 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427450768 Sound could be heard, even though the battle was in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427450859 In the video, the sound of explosions could be heard, despite the fact that they were in space. This could not be possible as there is no air or a medium to transmit the sound waves in space. The explosions should have been silent. For example, sound could be heard on earth as the air molecules collide with one another to produce sound.
Question: Why do horns make a sound louder?]]> 2020-01-03 08:39:03 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427450859 Sounds should not be heard in space as it is a vacuum https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427456879 In the video, the lasers fired and explosions could be heard even though the fight took place in space. Sound travels through the vibration of atoms and molecules in a medium, and since space is a vacuum, there is no air, as such sounds should not be heard in space.

For example, we are able to here sounds on earth due to the presence of air molecules in the atmosphere, hear sounds in the water due to the presence of water molecules. This allow sound waves to travel and allow us to hear them.

In what ways can we project sound waves to make them louder?]]> 2020-01-03 09:48:54 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427456879 Sound is unable to travel in space and thus should not be able to be heard. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427507223 In the video, the sounds of the ships exploding were able to be heard even though the scene was in space. As sound travels through the vibration of particles in the area, it can only be heard when the area that it travels through is not vacuum. However, since space is vacuum, sound is technically not able to be heard as it cannot be transmitted. 

For example, sound can be transmitted on earth because of the air particles around us. A source of sound will cause these sound waves to vibrate thus causing the sound waves to travel. However, such particles do not exist in space which would not allow sound waves to travel.

How small must the particles be to conduct sound waves?]]> 2020-01-03 16:00:02 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427507223 We should not be able to hear sounds produced in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427585792 The video displayed many explosions, lasers and sounds that were produced while in space. However, we are able to hear these sounds from afar which is impossible.
 Firstly, to explain how sound works, sound requires a medium to travel through. They do so by vibrating the particles in the medium so that they bump into each other. Eventually the vibrations of the particles will reach your ear/ear drums which our brain can then intepret as sound. 
However in space, a vacuum, there is no/very little particles present to be vibrated. As a result, sound is unable to travel through space.

For example, on Earth we can hear sounds from a distance, such as when someone shouts at you. When they shout, their vocal cords would vibrate, producing sound waves that travel through air molecules to reach your ear.

Q: There are a miniscule amount of particles in space yet sound is unable to travel through them. Thus, what is the minimum amount of particles required to allow sound to be conducted.

]]> 2020-01-04 04:59:19 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427585792 Sound should not be heard when shootings and explosions occur in space https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427593251 Sound requires a medium for sound waves to travel through so as to be heard due to the vibration of air molecules about a fixed position. However, space is a vacuum and hence there is no air molecule to be used as a medium to transmit sound wave for people to hear. Thus the explosions and lasers should produce no sound at all while in space.

My question is what are the factors that cause the sound coming out of my mouth to be muffled when I scream underwater?]]> 2020-01-04 07:54:47 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427593251 There should not be sounds produced by the lasers and explosions https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427675216 The explosions and lasers occur in space, which is a vacuum. This means that sound, which is transmitted through the vibration of air molecules, should not be able to travel through space and be heard by us viewers.

However, despite also being in space, we should be able to hear the dialogues between the pilots. This is because there are air particles in the cockpit of their Resistance Bomber, which allows sound made by them to travel to the co-pilots through them vibrating about a fixed position and bumping into other air molecules till it reaches the co-pilots.

Q: How do explosions cause the vibration of air particles which produces their unique type of sound?]]> 2020-01-05 04:50:00 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427675216 Sounds should not be heard in space. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427691493 Sound waves  need a specific medium to vibrate through (like air) and since space is a vacuum without any air, sound waves are unable to be transmitted. 

For example, a small scale example was used to illustrate how sound cannot travel through a vacuum (represented by a sealed glass jar with no air) and the music from a cell phone could not be heard once the jar was sealed tight. 

Question: If sound is able to travel through water, why does it sound blur when we try to talk underwater

]]> 2020-01-05 08:53:06 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427691493 Sounds should not be able to be heard in space. https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427712567 As space if a vacuum, where sound waves are unable to travel through, sounds from the explosions and lasers should not be audible to people in space. 
For example, sounds in space from collisions are unable to be heard by astronauts in spacecraft or in space stations.
How can sounds be transmitted through space with another method other than going through a vacuum?]]> 2020-01-05 13:59:54 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427712567 Sound can't travel through a vacuum https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427872025 Within the video were many fights, accompanied by the sounds of the fighting such as explosions and laser blasts. However, space is a vacuum, which sound should not be able to travel through, hence there should be no sound by right. 
Q: Why is it then when there is music or sound underwater it sounds muffled]]> 2020-01-06 11:53:45 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/427872025 Sound should not be heard https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/428354131 As sound is a result of the vibration of atoms, it is a vector quantity that requires a medium to travel. Since space is a vacuum, the explosion should not cause any sound as the blast would not disrupt any atoms as there are none. As a result, the explosion should be completely silent.

]]> 2020-01-07 13:20:45 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/428354131 We should not be able to hear any sounds https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/430479059 The explosions occurs in space which is a vacuum and since sound is caused by the vibration of molecules there should not be any sound heard.]]> 2020-01-12 15:03:35 UTC https://padlet.com/huikuan_tan/oiyd2893dcyg/wish/430479059