434 CHAPTER 7 The Metric System Practice the Skills In Exercises 9–18, indicate the metric unit of measurement that would best express the mass of the following. 9. A horse Kilograms 10. A hummingbird Grams 11. A book Grams or kilograms 12. A pill Milligrams 13. A new pencil Grams 14. A sports utility vehicle Metric tonnes or kilograms 15. A bee Milligrams 16. A box of cereal Grams 17. A full-grown elephant Kilograms or metric tonnes 18. A calculator Grams In Exercises 19–24, select the best answer. 19. The mass of a large coconut is about how much? a) 1.4 mg b) 1.4 g c) 1.4 kg (c) 20. The mass of a doughnut is about how much? a) 20 g b) 20 kg c) 20 mg (a) 21. The mass of a pencil is about how much? a) 5.3 g b) 5.3 mg c) 5.3 hg (a) 22. The mass of a bathroom scale is about how much? a) 1.8 g b) 1.8 mg c) 1.8 kg (c) 23. The mass of a full-grown male lion is about how much? a) 190 hg b) 190 kg c) 190 dag (b) 24. The mass of a full-size car is about how much? a) 1800 hg b) 1800 g c) 1800 kg (c) In Exercises 25–28, convert as indicated. 25. = 3.5 kg t 0.0035 26. = 17.4 t g 17 400 000 27. = 1 460 000 mg t 0.001 46 28. = 9.52 t kg 9520 In Exercises 29–36, choose the best answer. Use Table 7.5 and Fig. 7.17 to help select your answers. 29. Freezing rain is most likely to occur at a temperature of a) 25°C. − b) 32°C. c) 0°C. (c) 30. The thermostat for an air conditioner was set for 70°F. This setting is closest to a) 8°C. b) 21°C. c) 40°C. (b) 31. The temperature of the water in a certain lake is 12°C. You could a) ice fish. b) dress warmly and walk along the lake. c) swim in the lake. (b) 32. The temperature of the water of a hot shower might be a) 25°C. b) 40°C. c) 60°C. (b) 33. The temperature of flowing volcanic lava might be a) 50°C. b) 100°C. c) 1200°C. (c) 34. The temperature of an apple pie baking in the oven might be a) 90°C b) 100°C c) 177°C (c) 35. The temperature of the snow on top of Mount Rainier, Washington, might be a) 15°C. − b) 5°C. − c) 5°C. (b) m Mount Rainier, Washington 36. The temperature of a freshly made pot of coffee might be a) 30°C. b) 85°C. c) 140°C. (b) Steve Byland/Shutterstock Christopher Boswell/ Shutterstock Michael Potter11/Shutterstock
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