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Name ______________________________ Class ___________________ Date __________________ Assessment Quiz Section: Origin of the Universe In the space provided, write the letter of the term or phrase that best matches each description. _____ 1. an observed change in the frequency of a wave when the source or observer is moving _____ 2. theory that all matter and energy in the universe exploded ten to twenty billion years ago and began expanding in all directions _____ 3. galaxy moving away from Earth _____ 4. apparent shift toward shorter wavelengths of light when a luminous object moves toward the viewer a. b. c. d. e. f. g. h. i. j. universe red shift blue shift big bang theory cosmic background radiation Doppler effect big crunch red-shift galaxy dark matter general theory relativity _____ 5. theory that matter distorts space _____ 6. sum of all space, matter, and energy _____ 7. matter not visible through current methods, but observable through gravitational interactions between galaxies _____ 8. apparent shift toward longer wavelengths of light when a luminous object moves away from the viewer _____ 9. steady but faint microwaves from all over the sky _____ 10. the possible contraction and collapse of the currently expanding universe Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science Spectrum 14 The Universe