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Chapter 1: Essential Concepts of Radiologic Science Test Bank MULTIPLE CHOICE 1. Matter is measured in _____. a. kilograms b. joules c. electron volts d. rems ANS: A Matter is measured in kilograms DIF: Easy REF: page 3 OBJ: Recognize the unit of measurement for matter. 2. Energy is measured in _____. a. kilograms b. joules c. electron volts d. B or C ANS: D Energy is measured in joules or electron volts DIF: Moderate REF: page 4 OBJ: Recognize the unit of measurement for energy. 3. Atoms and molecules are the fundamental building blocks of _____. a. energy b. radiation c. matter d. gravity ANS: C Atoms and molecules are the fundamental building blocks of matter. DIF: Moderate REF: page 3 OBJ: List the fundamental building blocks of matter. 4. Ice and steam are examples of two forms of _____. a. matter b. radiation c. energy d. work ANS: A Ice and steam are examples of two forms of matter. DIF: Difficult REF: page 4 OBJ: Describe states of matter. 5. The formula E=mc2 is the basis for the theory that led to the development of _____. a. x-rays