Review Quiz on Physics 9

Full Name: TRUE OR FALSEDetermine whether the following statements are correct or not. If the statement is correct select TRUE, if the statement is incorrect select FALSE. 1. When the height of an object increases, its potential energy also increases. TRUE FALSE 2. Releasing a stretched rubber band will produce a mechanical energy. TRUE FALSE 3. The wind that passes through a wind mill is converted into electricity. TRUE FALSE 4. The kinetic energy of a roller coaster increases as it travels upward. TRUE FALSE 5. Decreasing the entropy of the universe can help us to avoid the global warming. TRUE FALSE Sources of EnergyIdentify the type of energy that can be produced from the following resources Desert Solar Mountain Areas Wind Energy Petroleum Fossil Fuels Waterfalls Hydroelectric Hot Springs Geothermal 11. Which of the following sources of energy is more likely to produce least pollution? Solar Nuclear Coals Hydroelectric 12. Which of the following uses a heat engine? refrigerator aircon motorcycle generator 13. Which of the following describes the function of a heat pump? converts low temperature to high temperature converts high temperature to low temperature decreases the temperature of the surrounding increases the temperature of the surrounding 14. What form of heat energy can we get from foods? Joules Solar Calorie Vitamins 15. Which of the following will not increase the potential energy of an object? increase in height increase in weight increase in velocity none of the above Energy Transformation Chain 16. The waterfall is the primary source of energy in the diagram. What type of energy does it produce? electrical mechanical chemical potential 17. What type of energy is more likely to be produced from the waterfalls to the turbine? Chemical Mechanical Radiant Heat 18. The energy from the peels of the plants was converted to fertilizers. What type of energy has been involved in this transformation? Chemical Mechanical Radiant Heat 19. What process of energy transformation is present when the human eats the fruit before biking? mechanical to mechanical chemical to electrical chemical to mechanical mechanical to radiant 20. Aside from the mechanical energy produced by the rotation of the elisi of the Electricfan, it also releases what form of energy? chemical radiant light potential 21. Which of the following best describes the function of a step up transformer? It decreases the voltage of electricity. It increases the amount of electricity generated. It prevents short circuits It returns the energy back to its original form. 22. Which part of the electricity distribution process is responsible for the distribution of an appropriate voltage of electricity to the households? Transmission Lines Powerplants Distributing Substations Source 23. Which of the following is NOT true about renewable sources of energy? easily depleting inexhaustible easily available less pollutant Situation: Three boxes of the same weight are placed on different table the RED box is place 10 meters above the ground, the BLUE box is placed 12 meters above the ground and the Green box is placed 8 meters above the ground.24. Which box has the higher potential energy? RED BLUE GREEN They are equal Situation: Three boxes of the same weight are placed on different table the RED box is place 10 meters above the ground, the BLUE box is placed 12 meters above the ground and the Green box is placed 8 meters above the ground.25. Given that all boxes are at rest how will you describe their kinetic energy? Red has the highest Kinetic energy Green has the highest Kinetic energy The kinetic energy is larger than the potential energy All boxes have no kinetic energy.