„PERFECT EDGE MICRO PERFORATO 13. An echo occurs when a sound wave is A. reflected C. absorbed B. refracted D. transmitted 14. Among the colors of light which color has the shortest wavelength? A. yellow C. green B. violet D. red 15. Based on the colors of light, what color comes between blue and violet? A. green C. Indigo B. orange D. yellow 16. Violet is bent most among the seven colors because it has A. highest frequency C. longest wavelength B. lowest frequency D. shortest wavelength 17. Which of the following can separate white light into seven colors? A. prism C. box B. paper D. cellphone 18. The arrangement of colors of light is A. VIBGROY C. ROYGVIB B. ROYGBIV D. BIVGROY 19. Which color has the highest frequency? A. Red C. Violet B. Yellow D. Orange 20. The boiling point of water in °C is_ A. 75°C C. 0°C B. 90°C D. 100°C 21. The freezing point of water in °C is A. 0°C C. 75°C B. 90°C D. 100°C 22. The rate of flow of electric charges from one point to another in a circuit is, A. Voltage C. Resistor B. Electric current D. wire 23. The electric current is measured in A. Voltmeter C. Ampere B. thermometer D. voltage 24. A circuit that consists of one loop is called A. Parallel circuit B. Multiple circuit D. Series Circuit 25. A circuit that has two or more loops is called A. Parallel circuit B. Multiple circuit D. Series circuit B. Single circuit B. Single circuit​