Match each description with the appropriate term listed. Place your answer in the blankspace given.i. diffraction ii. polarizationiii. reflection iv. refractiona. the return of a wave from a surfaceb. the bending of light that occurs when its speed changesc. the bending of a wave as it passes by the edges of an openingd. the process in which the vibration of a wave is confined to one direction29. Match each description with the appropriate term listed. Place your answer in the blankspace given.i. bright-line spectrum ii. continuous spectrumiii. dark-line spectrum iv. Doppler-shifted spectruma. a spectrum associated with light passing through anenergy-absorbing mediumb. a spectrum of light emitted from an excited gas under low pressurec. a spectrum of light from a moving celestial objectd. a spectrum having no lines or bands30. Match each description with the appropriate term listed. Place your answer in the blankspace giveni. black hole ii. pulsariii. supernova iv. white dwarfa. a region in which the gravitational field is so strong that neither matter norelectromagnetic radiation can escape from itb. a compact star in the last stage of a low-mass starc. a stellar explosion that produces a bright cloud of ionized gasd. a rotating neutron star½½½½½½½½½½½½

Which term refers to the bending of light rays when they encounter the edge of a barrier?A interferenceB reflectionC refractionD diffraction

Which of the following best describes refraction?A The bending of a wave as it reflects at an angle from a surface.B The bending of a wave as it passes at an angle from one material to another.C The bending of a wave it goes around, or passes through, openings in a barrier.D The bending of one wave as two or more waves try to occupy the same space at the same time.

What phenomenon occurs when a wave of light changes direction as it passes through the edge of an object?Question 23Select one:a.Reflectionb.Refractionc.Polarizationd.Diffraction

Match each word with its correct definition by writing the letter on the line. _________ wavelengthA. the distance from one crest of a wave to the next _________ frequencyB. waves that transmit energy through matter or empty space _________ waveC. the transfer of energy by electromagnetic waves _________ electromagnetic wave D. a disturbance that transmits energy _________ radiation E. the number of crests of a wave that pass a certain point in a given amount of time

Each colour within the visible light spectrum has its own narrow band of __________ and frequency. What one word completes the sentence?