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light travels 299, 792 km per second.

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light can travel 100 billion km per hour. By Rayaan

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(  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.

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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...

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My questions for light and sound by: Areeb.

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My questions for light and sound by: Areeb.

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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

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All about light and sound                   (Hania)

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All about light and sound                   (Hania)

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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.

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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.

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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

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why light travels faster than sound By Logan

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why light travels faster than sound By Logan

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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.

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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.

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How many decibels is too many and how many decibels are in things you listen to? By Ridhikka

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How many decibels is too many and how many decibels are in things you listen to? By Ridhikka

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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.

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Sound can travel at speeds of 767.269 MPH (miles per hour) or 1234.8 KPH (kilometres per hour).

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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.

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Well what I learned when I searched up how far can sound travel is, 100 m. Thats what I learned.

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Sound waves travel 346 meters per second in room temperature and 346 meters per second in freezing air.

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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.

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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!

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How do you get light into Light bulbs?   BY: Bobby

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How do you get light into Light bulbs?   BY: Bobby

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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

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 Why can’t you see sound waves? By: Arham

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 Why can’t you see sound waves? By: Arham

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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.

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Why can't we see sound and  only hear it?    By Safina

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Why can't we see sound and  only hear it?    By Safina

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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.

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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).

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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.