Waves Of Light

What is a wave?

• Rhythmic disturbance that carries  energy but no matter 
• Range of  electromagnetic waves, including radio waves,visible light,and x-rays with differant frequincies and wavleghths

What is reflection?

• Highest frequency , most penetrating electro magnetic waves 
• Bending of a wave as it moves from medium into another medium;due to change in speed
• Occurs when a wave that strikes an object or surface and bounces off

Decide which answer is best for refraction?

• To bounce off- to scatter light
  
• the bending of light as it slows down due to a change in medium- to bend the light due to a change in speed.
  
• a substance that energy travels through
  

Decide which answer is best for amplitude

• distance a wave rises above or below its normal level which is related to the energy that the wave carries: in a transverse wave is one half the distance between the crest and the trough. Tells how much energy the wave is carrying, with light tells the brightness of the light with sound it tells the volume of the sound.
  
• A wave in which the energy travels in one direction and the matter moves in right angles to the direction the wave is traveling - Light is a transverse shaped wave, but it doesn’t require matter.
  

Decide the best definition of  frequency

• How low or how high a sound is
• The number of wavelengths that pass a given point in one second 

Decide what is the best answer for wavelength?

• in transverse waves, the distances between two adjacent crests or two adjacent troughs. In compressional waves, the distance from the centers of adjacent rarefactions. This tells the energy used in the electromagnetic spectrum including color within the visible light portion of the spectrum. Reds the longest wavelength we can see and violet is the shortest. Gamma rays have the shortest wavelength and radio has the longest. Wavelength is related to frquency
  
• A disturbance that carries energ ynot matter

Decide the best answer of mechanical energy

• The ability to do work,change thing or move them
• includes potential and kinetic energy- form of energy associated with the position or movement of an object
  

What is contraction

• An increase in size due to a rise in temperature as molecules spread ou
• a decrease in size due to a decrease in temperature as  the molecules come closer together.