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Sound is carried by vibrations of molecules. When you talk here on Earth, air molecules transmit the vibrations and allow others to hear you. In open space there are very few molecules at all so there is nothing to carry the vibrations.
Radios use radio waves to transmit information from one to another. These waves move through space by themselves so they can be transmitted from one astronaut to another. Then the radio turns the wave back into sound in the air filled compartment the astronauts breath in.
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Why did astronauts use radios to talk on the moon?
There are many reasons, but significant ones are related to available atmosphere. The astronauts must stay in their space suits to get breathable air. Denser air is better for the transmition of sound. So it is hard to get sound to go through the space suit and then hard to get it to go through the low density atmosphere of the moon. Radios are easier and can go much farther.
Why did the astronauts have to use radios on the moon?
Since the moon has no atmosphere sound will not travel. An astronaut would need to use a radio to talk to another even if they were only a few feet apart.
What do astronauts do all day in space?
Astronauts do have a busy day in space, they have to control the spacecraft,talk to n.a.s.A and follow instructions. they may walk n space-as well.
Can the astronauts talk on the surface of moon as on the earth?
no there is no air in the surface of the moon
Why do astronauts have radio transmitters when they are on moon?
So they can talk to each other and Earth, even though there is no air.Astronauts have radio transmitters on moon as they cannot communicate with each other.Sound cannot travel if there is no air. As there is no air on the moon astronauts need radio transmitters when they are on moon.
Can astronauts speak in space?
Yes, astronauts talk in space, as they always have acess to oxygen.(using radios)
Why can astronauts hear on moon if they come close to each other so that their helmets touch?
Normally, to communicate in space, astronauts need radios. This is because sound (in this case, speech) requires a medium (such as air) to move through. In space, since there is no air, astronauts cannot talk to one another directly. However, in your case, the astronauts may converse because their helmets are touching - thus giving the sound waves a medium to move through - the helmets.
Why did astronauts use radios to talk on the moon?
There are many reasons, but significant ones are related to available atmosphere. The astronauts must stay in their space suits to get breathable air. Denser air is better for the transmition of sound. So it is hard to get sound to go through the space suit and then hard to get it to go through the low density atmosphere of the moon. Radios are easier and can go much farther.
Why do astronauts who land on moon talk through wireless sets using radio waves?
Sound needs air to travel through, and as there's no air on the moon. Astronauts have to use radios to talk to each other when in an envrionment without air. Radio waves travel through space and have no trouble traveling where there's no air.
Why did the astronauts have to use radios on the moon?
Since the moon has no atmosphere sound will not travel. An astronaut would need to use a radio to talk to another even if they were only a few feet apart.
What do astronauts do all day in space?
Astronauts do have a busy day in space, they have to control the spacecraft,talk to n.a.s.A and follow instructions. they may walk n space-as well.
How do astronauts talk to their families?
Just like anyone else does. On the phone! If they are in space they don't talk to their family probably.
What do astronauts take with them to the moon?
If you are travelling to space, you would have to take:FoodWaterOxygenA radio (to talk to your families on Earth)A camera (to take pictures of the planets)We're sorry if this did not answer your question, but it did answer a little bit of it.
What is the main work of the astronaunts aboard the iss?
Why do astronauts have to work out on the International Space Station?Image courtesy NASAAstronaut Edward T. Lu exercises on the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory on the International Space Station (ISS). Why are astronauts onboard the ISS working out all the time? See more astronaut pictures.When people on Earth decide to start working out, they do so for several reasons. We exercise to keep our hearts healthy, tone muscles, reduce stress or lose a little weight. For astronauts living in an environment like the International Space Station, however, exercising isn't a matter of choice -- it's a necessity. They need to keep moving in space for all of the above reasons and more.If you sneaked a peak at one of the daily schedules for the International Space Station, you'd notice a lot of exercise. Although the schedules are always different and each day requires several different tasks -- one day might be full of interviews with magazines and television programs, another day might include a spacewalk to fix a part of the station -- there are four things astronauts will always do during their stays. Along with eating, sleeping and calling home to talk with family members, exercise is one of the most important activities in an astronaut's busy day. In fact, astronauts receive as much as four hours of exercise in a 16-hour period.Why are astronauts on board the ISS working out so much? Aside from keeping fit and staying on top of their game, the main reason astronauts work out during trip into outer space is because they suffer from a condition similar to osteoporosis, a disease that results in a significant amount of bone loss. But wait -- aren't astronauts in the peak of health? How does being in space eat away at your bones?Why does living in space affect our bodies differently, and what can astronauts do about it? Will dumbbells do the trick, or do they need something more? To learn about why astronauts need to stay pumped up in space,
What is radio communication?
Radio communication is the transmission of information through radio waves between two or more devices. It is used for various purposes such as broadcasting, two-way communication like walkie-talkies and cell phones, and communication with satellites and spacecraft. Radio communication relies on frequencies within the radio spectrum to transmit signals over short or long distances.
Who was the first president to talk to astronauts on the moon by radio-telephone?
Nixon
Can the astronauts talk on the surface of moon as on the earth?
no there is no air in the surface of the moon
