Easy Physics 1 quiz.

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Name _________________________________ I.D. Number _______________________ Unit 6 Evaluation Physics 1 (SCIH 035 058) This evaluation will cover the lessons in this unit. It is open book, meaning you can use your textbook, syllabus, and other course materials. To submit the evaluation, follow the directions provided. Multiple Choice Choose the answer that best completes the statement or answers the question. _____ 1. In the top of a barometer there is a space that is filled with a. b. c. d. e. _____ helium. dense mercury vapor. water vapor. air. none of the above. 2. One simple mercury barometer tube has twice the cross-sectional area of another. Mercury in the smaller tube will rise a. b. c. d. e. _____ the same height as in the larger tube. four times as high as mercury in the larger tube. twice as high as mercury in the larger tube. more than four times as high as in the larger tube. to none of the above. 3. Alcohol is less dense than water. If alcohol is used to make a barometer on a day when atmospheric pressure is normal, the level of the alcohol will be a. less than 10.3 m. b. 10.3 m. c. more than 10.3 m. _____ 4. Air pressure in a tire is a measure of a. b. c. d. e. Unit 6 Evaluation the density of air inside the tire. the number of molecular collisions each second. the temperature of the air inside the tire. the impact of the molecular collisions on the tire. all of the above. SCIH 035 _____ 5. If you squeeze a balloon to one half its original size, the pressure inside will a. b. c. d. e. _____ 6. The air in your classroom has a. b. c. d. e. _____ mass. energy. weight. temperature. all of the above. 7. A balloon is buoyed up with a force equal to a. b. c. d. e. _____ decrease by a factor of 2. decrease by a factor of 4. stay the same. increase by a factor of 2. increase by a factor of 4. the atmospheric pressure. the density of surrounding air. the weight of air it displaces. the weight of the balloon and contents. all of the above. 8. If you are standing on the moon and release a balloon filled with helium gas, the balloon will a. fall. b. neither rise nor fall. c. rise. _____ 9. Bernoulli's principle says that a. b. c. d. e. internal fluid pressure decreases as the fluid speed increases. as volume of a gas increases at constant temperature, the pressure decreases. an object in air is buoyed up by a force equal to the weight of air displaced. internal fluid pressure increases as the fluid speed increases. as volume of a gas increases at constant temperature, the pressure increases. _____ 10. Lobsters live on the bottom of the ocean. The density of a lobster is a. equal to the density of seawater. b. greater than the density of seawater. c. less than the density of seawater. Unit 6 Evaluation SCIH 035 _____ 11. If an object has a density equal to the density of water, it will a. neither float nor sink, but stay anywhere it is put. b. sink. c. float. _____ 12. When an ice cube in a glass of water melts, the water level a. rises. b. remains the same. c. falls. _____ 13. There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived. Which of the following is most likely? a. b. c. d. e. The force on his finger would have been huge, but the pressure very small. This is impossible because of the large size of the Atlantic Ocean. The force on his finger would probably have been less than 1 N. Both the force and pressure on his finger would have been very large. None of the above would have occurred. _____ 14. A hydraulic press multiplies a force by 100. This multiplication is done at the expense of a. b. c. d. e. the distance through which the force acts. the time over which the force acts, which is extended by a factor of 100. the mechanism providing the force. energy, which decreases by a factor of 100. none of the above. _____ 15. Suppose a stone weighs 8 N in the air, but in water it weighs only 5 N. What is the buoyant force acting on the stone? a. b. c. d. e. 3N 5N 8N 13 N 16 N _____ 16. Floating Freda, who can just barely float in fresh water, has a mass of 44 kg. Her volume is therefore about a. b. c. d. Unit 6 Evaluation 22 liters. 44 liters. 220 liters. none of the above. SCIH 035 _____ 17. A block of iron is heated in a furnace, where it consequently expands. In the expanded condition, its density is a. more. b. the same. c. less. _____ 18. A 1612-kg metal block has a density of 4979 kg per cubic meter and an approximate volume of a. b. c. d. e. 0.32 cubic meters. 3.09 cubic meters. 4.98 cubic meters. 1.61 cubic meters. none of the above. _____ 19. The existence of crystals in many solids was not discovered until _____________ became a tool of research in the twentieth century. a. b. c. d. Hooke’s law scaling x-rays gamma rays _____ 20. Steel is used in construction girders because it is an excellent _____________ material. a. inelastic b. elastic c. Elasticity does not matter in construction girders. _____ 21. If all dimensions of a house were to double, its floor area would go up by a factor of a. b. c. d. e. 2. 3. 4. 8. 16. _____ 22. Which will cool a glass of water faster, ice cubes or the same mass of crushed ice? a. the cubes b. the crushed ice c. Neither—they will both cool the water at the same rate. Unit 6 Evaluation SCIH 035 _____ 23. A 4-kg load stretches an elastic belt 0.02 m. How much will a 6-kg load stretch the belt? a. b. c. d. e. 0.12 m 0.02 m 0.03 m 0.01 m 0.08 m _____ 24. What is the most abundant element in the known universe? a. b. c. d. e. nitrogen oxygen hydrogen carbon water _____ 25. Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, then it is likely that we breathe one of those atoms a. b. c. d. every month. every 10 years. with each single breath. every day. _____ 26. Brownian motion has to do with a. b. c. d. e. atomic vibrations. the first direct measurement of electron energy levels. the size of atoms. random motions of atoms and molecules. rhythmic movements of brownies. _____ 27. The reason a granite block is mostly empty space is because the atoms in the granite are a. b. c. d. e. Unit 6 Evaluation held together by electrical forces. in perpetual motion. mostly empty space themselves. not as close together as they could be. invisible. SCIH 035 _____ 28. Solid matter is mostly empty space. The reason solids don't fall through one another is because a. b. c. d. e. of nuclear forces. of gravitational forces. atoms are constantly vibrating, even at absolute zero. of electrical forces. of none of the above. True/False Indicate whether the statement is true or false. _____ 29. A fluid can be either a gas or a liquid. a. True b. False _____ 30. Atmospheric pressure at sea level is about 100,000 Pa. a. True b. False _____ 31. Because of the consequences of scaling, science fiction monsters like King Kong cannot exist. a. True b. False _____ 32. Brownian motion results from the motion of neighboring atoms and molecules. a. True b. False _____ 33. An element is a substance made from atoms of different compounds that are combined in a fixed proportion. a. True b. False _____ 34. Although atoms are mostly empty space, at the center of an atom is a mass-filled region called the nucleus. a. True b. False Unit 6 Evaluation SCIH 035 _____ 35. There is a fourth phase, called a plasma, that is not so common in our everyday world, yet it is the predominant phase of the matter in the universe. a. True b. False Matching Match the following terms with their definitions. a. crystals b. barometric pressure c. buoyant force d. dark matter e. pressure _____ 36. unseen matter that makes up 23% of the universe _____ 37. regular geometric shapes that make up all minerals _____ 38. the force per unit area on which force acts _____ 39. the net upward force exerted by a fluid on a submerged or immersed object _____ 40. the pressure of the atmosphere used by meteorologists in predicting weather Carefully check your answers on this evaluation and make any corrections you feel are necessary. When you are satisfied that you have answered the questions to the best of your ability, transfer your answers to an answer sheet. Please refer to the information sheet that came with your course materials. Unit 6 Evaluation SCIH 035 BLANK PAGE ...
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