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Chapter_1_test

# Chapter_1_test - CHAPTER 1 Discovering the Night Sky 1 The...

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CHAPTER 1: Discovering the Night Sky 1. The average distance from the Earth to the Sun, 149,600,000 km, can be written in shorthand notation as A) 1.496 × 10 8 km. C) 1.496 × 10 9 km. B) 1.496 × 10 6 km. D) 1.496 × 10 7 km. Ans: A Section: Toolbox A-1 2. The diameter of the hydrogen atom, 0.000,000,000,11 m, can be written in shorthand notation as 3. The mass of the electron, 0.000,000,000,091 kg, can be written in shorthand notation as 4. The mean distance of Saturn from the Sun, 1,427,000,000 km, can be written in shorthand notation as 5. There are 1000 mm in one meter. This means that a distance of 10 mm is A) 1 × 10 –4 m. B) 1 × 10 –2 m. C) 1 × 10 –1 m. D) 1 × 10 –3 m. Ans: B Section: Toolbox A-1 6. 0.034 meter is 7. 10 2 × 10 5 = 8. 10 0 (10 to the power 0) = Page 1

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CHAPTER 1: Discovering the Night Sky 9. The number 50,000 is written in powers-of-ten notation as A) 5 × 10 4 . B) 5 × 10 5 . C) (50) × 10 –3 = 5 × 10 –2 . D) 5 × 10 3 . Ans: A Section: Toolbox A-1 10. 10 –3 × 10 3 = 11. (3 × 10 4 ) 4 = 12. (1/2) 4 = 13. (0.5) 3 = A) 0.125 B) 125 C) 1.25 × 10 –2 D) 1.5 Ans: A Section: Toolbox A-1 14. 10 4 × 10 8 = 15. 10 8 /10 9 = 16. (8.0 × 10 5 )/(2 × 10 3 ) = 17. 10 5 /10 5 = A) 1 B) 10 12 C) 0 D) 10 Ans: A Section: Toolbox A-1 Page 2
CHAPTER 1: Discovering the Night Sky 18. 1.5 × 10 4 × 1.5 × 10 –4 = 19. One billionth divided by one millionth is equal to 20. (2 × 10 3 ) 3 = 21. By what approximate factor, in powers-of-ten notation, is a human being (height about 2 m) larger than the nucleus of a hydrogen atom, or proton (diameter about 10 –15 m)? A) 2 × 10 13 B) 2 × 10 30 C) 2 × 10 –15 D) 2 × 10 15 Ans: D Section: Toolbox A-1

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Chapter_1_test - CHAPTER 1 Discovering the Night Sky 1 The...

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