sound waves
Energy. Light and radio waves etc.
Yes. Light is an example of an electromagnetic wave, and air is an example of matter. When you see something, the light from that object is being reflected from a source off it, or perhaps the object itself emits light (candle, light bulb, sun). It travels through the air to your eye. Another example is FM radio.. that travels through air as well. Light travels through water as well.
No. Heat radiation is electromagnetic radiation, like radio or light. Notice that we receive vast amounts of heat from the sun yet that heat travels mainly through empty space.
No, an electromagnetic wave does not require matter (a medium) to transfer energy. Electromagnetic energy (like light or radio waves) travels perfectly well in the vacuum of space. In contrast, a mechanical wave, of which sound is an example, does require a medium through which to travel.
Radiated energy of: light heat radio microwaves x-rays cosmic rays gamma rays and so on.
Energy. Light and radio waves etc.
Heat travels through vacuum as electromagnetic radiation, exactly the same way that light and radio do.
Light travels through a vacuum, and through the densest metals (though not usually very far). But then gamma radiation and radio waves are examples of light...
Yes. Light is an example of an electromagnetic wave, and air is an example of matter. When you see something, the light from that object is being reflected from a source off it, or perhaps the object itself emits light (candle, light bulb, sun). It travels through the air to your eye. Another example is FM radio.. that travels through air as well. Light travels through water as well.
light travels faster than radio wavws
No. Heat radiation is electromagnetic radiation, like radio or light. Notice that we receive vast amounts of heat from the sun yet that heat travels mainly through empty space.
Radio waves and light waves.
No, an electromagnetic wave does not require matter (a medium) to transfer energy. Electromagnetic energy (like light or radio waves) travels perfectly well in the vacuum of space. In contrast, a mechanical wave, of which sound is an example, does require a medium through which to travel.
Yes. Radio is a form of electromagnetic wave, so it travels at the speed of light. Since sound requires a physical medium and it is (theoretically) impossible for matter to attain the speed of light, the speed of sound can never be equal to/above the speed of light, and this statement is correct.
A satellite signal will be a radio signal. And a radio signal in space travels at the speed of light.
Radiated energy of: light heat radio microwaves x-rays cosmic rays gamma rays and so on.
Radiated energy of: light heat radio microwaves x-rays cosmic rays gamma rays and so on.