Chapter: Chapter 1 Multiple Choice 1. Which one of the following is an SI base unit? A) gram B) slug C) newton D) centimeter E) kilogram Ans: E Difficulty: Easy SectionDef: Section 1-2 and Section 1-3 2. Complete the following statement: Today, the standard meter is defined in terms of A) the distance from the earth's equator to the north pole. B) the wavelength of light emitted from a krypton atom. C) the wavelength of light emitted from a sodium atom. D) a platinum-iridium bar kept in France. E) the speed of light. Ans: E Difficulty: Medium SectionDef: Section 1-2 and Section 1-3 3. Complete the following statement: Today, the standard unit of mass is defined in terms of A) a specified volume of water at 4 °C. B) Planck’s constant h. C) a specified number of cesium atoms. D) a standard platinum bar. E) the speed of light.