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Prince Georges’ Community College Radiography Program RAD 1500 Image Production I Chapter One – Essential Concepts of Radiologic Science Worksheet Answer the following questions
- Who discovered x-rays and when? Wilhelm Conrad Roentgen in 1895
- Looking at Sources of ionizing radiation, what is the largest source of natural environmental radiation? Radon
- The removal of an electron from an atom? ionization
- The following example: “ a boulder rolling down from the top of a mountain” describes which type of energy? kinetic
- Water and steam are different forms of matter__.
- Which of the following is the BEST example of thermal energy? A. voltage B. a coiled spring
- C. vibrating electrons D. radiation
The FIRST discovery of x-rays came during the exposure of a fluorescent material during experiments with a cathode ray tube. The material was coated onto a plate. What was the material called? Barium platinocyanide
What is the work done if a force of 200 N is applied over a distance of 15 meters? Hint: Formula for Work W=Fd 3,000 J
Which of the following is an example of a proper fraction? A. 13/ B. 3/ C. 8/ D. 9/
What is the value of: 3/6 + 1/ Refer to ppt slide 20 – figure out LCD then reduce fraction 12/24 +3/4 = 15/24=5/
What is the exponential form of 16,300? A. 16 x 10 5 B. 1 x 10 3 C. 1 x 10 4 D. 16 x 10 4
The rem____________ is the unit to describe the dose of ionizing radiation received by the radiologic technologist.
What are the 3 basic quantities measured in mechanics? Look at Standard units of Measurement in text. Mass, Length, time
What was the device that Roentgen used to discover x-rays? Crookes tube
The SI unit for power is the joule/second (J/s) – What other unit is used to quantify power? watt
Two objects of equal mass will also have equal: A. size B. volume C. density D. all of the above E. none of the above
A measure of 10-3 is a: Can refer to SI prefixes inside front of your Bushong text. A. centirad B. microrad C. megarad D. milliarad
Name a source of man-made radiation. X-rays
The year 1904 represents an important date in the history of radiography, what event took place during that year that changed the way scientists responded to the effects of radiation exposure? Death of Edison’s assistant – Clarence Dally – due to radiation exposure
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Subject: Computer Science
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