Final Semester 2 Review KEY 1. a build up of charge 2. an excess or deficiency of charge 4.Conductors allow flow of electrons and insulators inhibit flow of electrons 5. like, opposite 6. resistance=Ohms, current= Amps, Charge= Coulombs, voltage and electric potential=Volts 7. decreases 11. increase 12. increase 13. 1250 V 14. 0.72 Ohms 15. 1.7 A 18. a. series b. parallel 19. C 20. B 21. H 22. G 23. D 24. C 25. F 26. A 27. B 28. E 29. alignment of electron spins in the same direction 30. magnetic field produces/induces an electric current or reverse 31. increases 32. The outer core of the Earth rotating faster than the Earth
33. 34. It would become two magnets
35. A generator converts mechanical to electrical energy. An electric motor is opposite: electrical to mechanical. A transformer stores current and allows you to increase or decrease it based on the number of coils around the magnet. 36. Solar flares/wind charging the atmosphere 37. Opposites attract, Likes repel, electromagnetic induction, both have fields and can vary in strength, both have forces 38. particles, corpuscles 39. particle, wave 40. it looked like a series of dots, some colored because the wavelengths changed from interference 41. C 42. B 43. A 44. D 48. a. Light as a wave: interference, diffraction Light as a particle: reflection, refraction b. 300,000 km/s 49. E 50. E 51. A 52. G 53. B, G 54. G 55. A 56. B 57. C 58. D 59. A 60. C 61. F 62. a. longer b. lower c. longer 63. both are waves, carry energy, have frequency, and energy (amplitude for sound) etc.
64. Transverse
66. Longitudinal
65. b 66. a 67. b 68. c 69. b 70. a 71. a 72. c 73. solid, liquid, gas 74. higher=shorter string and shorter wavelength 75. Apparent change in frequency by and observer of a moving object; red shift=moving away 76. energy, matter/particles/atoms 77. pitch 78. SKIP 79.SKIP 80. speed of sound 81. red shift=moving away, Doppler Effect 82. seismograph
83. energy, movement/source, and medium 84. We cannot know when the energy and pressure will be released as it is continually building 85. release of energy and pressure caused by the moving of the earth’s plates 86. compression, longitudinal, vibrational 87. SKIP 88. energy 89. SKIP 90. resonance is the vibration of the object at the same natural frequency. Wood does this on a guitar to grow the sound, as does the base of a drum. 91. a. Htz or Hertz b. meters or m c. km/s d. m or meters e. Htz or Hertz f. SKIP 92. various answers, 93. chemical compound essential for life and metabolic processes 94. C, O, H, S, N, and Na 95. chemical reactions involved in maintaining a stable state and in energy exchange in the body 96. biological catalysts (speed up chemical reactions) 97. Lipids: a. gycerine or glycol b. energy and energy storage, lubrication for joints, for nerve and brain health c. excess fat d. malnutrition, brain problems, death, sleep problems e. fish oil, butter, any oil (olive, safflower, etc), dairy products Carbohydrates: a. glucose b. energy c. excess fat, depression, diabetes, heart disease d. lethargy e. breads, grains, rice, fruit, sweets Proteins: a. amino acids b. muscle building, organs, cell growth c. weight gain, cancer, yeast infection d. break down muscle, increased weakness, starvation e. meat, fish, dairy, legumes, tofu, quinoa 98. build more muscle, eat healthy, eat many little meals instead of few large ones, adequate sleep 99. protein chain 100. the weight of a fluid displaced by an object equals the upward buoyant force
101. large surface area and low density (air is less dense than water) 102. mass, volume, surface area 103. a. g/mL or g/cm3 b. Newtons (N) c. cm3 or mL d. grams or g 104. anything with mass and volume
