Light & Sound Answers by Doug Coope https://padlet.com/douglas_coope/5wpfwdpaworu Find the answer to one of your questions and post it here. Include your name. en-us 2018-01-17 01:18:50 UTC 2023-01-24 03:54:09 UTC hello@padlet.com hasans padlet not yours !!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222545664 2018-01-18 18:04:19 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222545664 Why can’t you see sound waves? By: Arham https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222595663 You cant see sound waves because sound is just like air, because air is invisible,so is sound.But some people can actually see sound waves and those people have a special ability,not everyone does though. ]]> 2018-01-18 19:43:36 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222595663 How do you get light into Light bulbs? BY: Bobby 849328 https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222613711 As the light travels through the wires and the slender threadlike object or fiber, the  filament heats up to the point where it begins to emit photons, which are small packets of visible light. In a typical 60-watt light bulb, the filament is made of a long, thin length of tungsten metal. So that is how you get light into light bulbs


   


]]> 2018-01-18 20:29:15 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222613711 How many decibels is too many and how many decibels are in things you listen to? By Ridhikka https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222614055 Decibels can go up to the level of 85 and if you go over that and listen for very long it can cause permanent ear damage and a lawn mower is about 90 dB and a loud rock concert is 120 dB and you will be deaf if you listen to that music for 2 to 10 minutes and when you hear from that many decibels it will damage the hair cells and the inner ear which clearly leads to deaf. Many many common sounds are louder that you think, a conversation usually occurs at 60 depends how loud you talk so you have to be very careful of what you listen to and how long you do so when you are at places or near things that are loud wear ear plugs or ear muffs but even if you still wear those you still do not have protection so it depends how long you listen to, so that is why you have to be careful how long you listen to it and what you are listening to. So the main thing here is to be careful what you listen to can and how long.]]> 2018-01-18 20:30:19 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222614055 How a sonic boom happen by Kingston https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222614712 A sonic boom happens by a loud sound kind of like an explosion. It’s caused by shock waves created by any object that travels through the air faster then the speed of sound. Sonic booms create huge amounts of energy.]]> 2018-01-18 20:32:13 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222614712 How fast are sound waves? Joseph https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222616788 Sound waves travel 346 meters per second in room temperature and 346 meters per second in freezing air.]]> 2018-01-18 20:38:06 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222616788 By Suleman https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222616802 Light travels 1 billion km and also did you now that you can listen to only this much 60 decibels and light make tha colours of tha rainbow.]]> 2018-01-18 20:38:09 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222616802 Why can't we see sound and only hear it? By Safina https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222624064  It's true that we can't  see sound but only hear it. Our ears sense the sound waves and our eyes can sense the light waves. But we can sense sound without our ears by looking at water ripples produce by loud sound. 
Sound travels by sound waves which are wavy in nature. The source produce the sound that travels in all directions through the medium like air, gas, and solid by the vibrations of the molecules that we can not see with our eyes. Light travels in a straight line and is of different wave length that produce different colours. We can feel the light by it's warmth even if our eyes are closed. We use different organs to sense sound and light. That's why we can not hear light and see sound.]]> 2018-01-18 21:00:19 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222624064 How far can sound travel https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222644019 Well what I learned when I searched up how far can sound travel is, 100 m. Thats what I learned. ]]> 2018-01-18 22:26:24 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222644019 Why is light important?( by: Aysha.b. https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222651215  Light is the plants' only source of energy. So that means they only are  dependent on light. Unlike people and animals who derive energy from carbohydrates, protein and fat. Plants produce these substances using the energy from light and from carbon dioxide in the air. 

]]> 2018-01-18 23:24:33 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222651215 (Moosa) How fast is sound? https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222651284 Sound can travel at speeds of 767.269 MPH (miles per hour) or 1234.8 KPH (kilometres per hour).]]> 2018-01-18 23:25:10 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222651284 Daniela)does light have sound? 759810 https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222653228 there is no sound in light at all. Light is made up of particles called photons. Sound is created by vibrations in the air.  If light  particles absorb matter it causes energy so that energy excites the particles and it might be able to make them vibrate, if a lot of them vibrate together they could make sound.

   ]]> 2018-01-18 23:41:37 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222653228 How fast is sound Zaid https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222653861 I found out that sound is about 1,225 km /h.The https://www.livescience.com/37022-speed-of-sound-mach-1.html says so. It says that on Earth's surface under water, they say that it is 15 Celsius is 761.2 mph (1,225 km/h). Because gas molecules move more slowly at colder temperatures, that slows the speed of sound; sound moves fastest through warm air!]]> 2018-01-18 23:48:35 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222653861 why light travels faster than sound By Logan https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222655586 In air, sound travels at around 340 meters per second which is very slow in comparison to light. Light can move so much faster because of the different types of waves sound and light are. Light waves move a lot quicker through any clear substance than soundwaves can even come close to.]]> 2018-01-19 00:07:15 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222655586 how light makes the sky blue(Awad) https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222657482 the particles in the sky are easy to bump so when light reflects the particles,it is blue that bumps around and soon all the particles in the sky are blue and then the whole sky is blue ]]> 2018-01-19 00:26:29 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222657482 How loud can sound get (Ayesha.A) https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222658353 Beyond Decibels. Since the loudness depends on the medium, the maximum loudness. Our atmosphere can do nothing more than 190 dB, that, by the way, is enough to make you deaf or cause death. Sounds in water can get louder.]]> 2018-01-19 00:36:39 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222658353 All about light and sound (Hania) https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222661176 light and sound is a very important thing of our life. When it is dark you can see everything. There are different Sound comes from animals,people,kids,babies,(newborn)cars,machines, electronic,devices,etc. Sun light is main source of vitamin D. sunlight also help to produce electricity.]]> 2018-01-19 01:08:58 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222661176 by ayesha.i https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222663406 2018-01-19 01:29:07 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222663406 My questions for light and sound by: Areeb. https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222664886 My question about light was why does light go so fast the answer is light goes so fast because light has no mass. My question about sound was how fast does sound go the answer was sound goes 1225 kilometers per hour]]> 2018-01-19 01:44:27 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222664886 How Light Travels (By: Nour) https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222665348 Light travels in waves and it always goes in a straight line. If a light hits something, it is either reflected, absorbed or refracted... Objects can be grouped based on how much light they let through them. Opaque objects absorb light, Translucent objects let some light through and Transparent object let a lot of light through...]]> 2018-01-19 01:48:54 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222665348 By Ayesha.I https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222666741 How fast does sound travel for kids?
In dry air, sound travels at 343 meters per second (768 mph). At this rate sound will travel one mile in around five seconds. Sound travels 4 times faster in water (1,482 meters per second) and around 13 times faster through steel (4,512 meters per second).
]]> 2018-01-19 02:03:50 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222666741 All about light and sound https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222778879 (  Navy )
Light is something  that helps see something or someone in the night. Sound is something that you can hear like when a baby is crying or when the phone is ringing and when a police cars light are ringing. ]]> 2018-01-19 14:08:15 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222778879 light and sound. https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222841683 light can travel 100 billion km per hour. By Rayaan]]> 2018-01-19 16:14:51 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/222841683 light and sound by: faith https://padlet.com/douglas_coope/5wpfwdpaworu/wish/225451725 light travels 299, 792 km per second.]]> 2018-01-28 23:43:09 UTC https://padlet.com/douglas_coope/5wpfwdpaworu/wish/225451725