Waves: Electromagnetic waves.

Question 1

Are electromagentic waves traverse or longitudnal?

Answer 1

• Transverse.
• ## Transfer energy from the source of the waves to an absorber.

Question 2

What is the electomagnetic spectrum?

Answer 2

• Begginning of Spectrum: Lower frequency and longer wave length.
• End of the spectrum: Higher Frequency and shorter wave length.
• Radio Waves, Microwaves, Infrared Radiation, Visible light, ultra violet radiation, x-rays, Gamma rays.
• Visible light= only part of electromagentic spectrum that can be detected by the human eye.
• Waves do not need a medium to travel in and can travel through a vaccum.

Question 3

What speed do electromagnetic waves travel in?

Answer 3

• All electromagnetic waves travel in the same speed in a vaccum.
• Speed is: 3 x 10^8 m/s.
• Different materials absorb, transmit, or reflect electromagentic waves.
• What happens to the waves depends on the wave length.