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Is it true that a light bulb converts electrial energy into electromagnetic energy?
True. Light is a form of electromagnetic energy.
Is it true chemical energy travels from the sun to earth and is transformed into light energy by plants?
It's not chemical energy travelling from the sun, it's electromagnetic energy in the form of visible light. Chemical energy is found in things such as glucose, batteries etc.
The energy produced by electromagnetic waves is?
chemical energy
Is it true that astronomers use only visible electromagnetic radiation to study space?
No.
Electromagnetic waves travel the speed of light is it true?
It is true.
Is it true the wavelength of infra-red light is too short for it to be seen?
no, the wavelength of infrared light is too long for it too be seen. visible light makes up only a small portion of the electromagnetic spectrum
What type of electromagnetic wave do humans see?
Human eye can see light rays only. Most probably the vise verse is true. The electromagnetic rays that are seen by the human eye are called as light rays. It is from violet to red colors. Ultraviolet and infrared rays are not seen by human eye.
Is this true or false mecanical waves din't need matter to travel through?
False, mechanical waves need a medium to travel through. Electromagnetic waves, such as visible light, don't.
Light energy travels in the form of?
They travels in the form of waves and are filtered through the Earth's atmosphere.
Is the following true or false the visible portion of the electromagnetic spectrum represents a large portion of the spectrum?
False
Compare the frequency and energy of infrared rays to the frequency and energy of visible light?
Infrared waves are shorter than radio waves and longer than visible light waves.
Is it true that the part of the electromagnetic spectrum you can see is called ultraviolet light?
Yes.
