Bushong 1-1 Nature of our Surroundings
which of the following is the principal difference between mass and weight? a. Mass is measured in lb; weight is measured in kg b. Mass is the equivalence of energy; weight is the force exerted by gravity c. there is no difference; mass and weight at equal d. weight does not change with position; mass does e. Weight is energy; mass requires gravity
B
The Milligray in tissue (mGya) is related most closely to which of the following? a. Dose equivalent b. Radiation exposure c. the gray d. the joule e. the Sievert
C
In Einstein's famous E =mc^2 equation, c stands for which of the following? a. Acceleration of mass b. Force c. Mass energy equivalence d. The speed of light e. The theory of relativity
D
What is the approximate annual effective dose from natural environmental radiation at sea level? a. 50 (micro)Sv/yr (5 mrem/yr) b. 100 (micro)Sv/yr (10 mrem/yr) c. 500 (micro)Sv/yr (50 mrem/yr) d. 1 mSv/yr (100 mrem/yr) e. 5 mSv/yr (500 mrem/yr)
D
X-rays are most like: a. Alpha rays b. Beta rays c. Diagnostic ultrasound d. Gamma rays e. Radio waves
D
When ionization occurs, which of the following is true a. The negative ion is electromagnetic radiation b. the negative ion is the ion pair c. the negative ion is the target atom d. the positive ion is electromagnetic e. the positive ion is the resulting atom
E
Which of the following items is considered to be matter? a. Airport surveillance x-rays b. anode heat c. Cell phone signals d. Light from a movie projector e. Wet snow
E
which of the following is an example of electromagnetic radiation? a. Alpha radiation b. Beta rays c. Sound d. Ultrasound e. Visible light
E
Radiation is: a. Energy transferred b. Isotropic emission c. Kinetic particles d. Mass with a charge e. Measured in joules
A
The milligray in air (mGyt) relates to which of the following a. A dose equivalent b. Ions produced in the air c. Isotropic emission d. Non-ionizing radiation e. Tissue-absorbed dose
B
Which of the following contributes more than 1 mGyt per year to each of us? a. Consumer products b. Diagnostic x-rays c. Microwave oven radiation d. Radioactive fallout radiation e. Radioisotopes in nuclear medicine
B
Which of the following examples best represents kinetic energy? a. A snowman b. A thrown snowball c. Anode mass d. The metal plates in a battery e. The terminals of a battery
B
Which of the following is a unit of mass? a. Joule b. Kilogram c. mrad d. Pound e. Volt
B
Which of the following is an example of potential energy? a. A heated anode b. A mobile x-ray imaging system in motion c. An s-ray beam d. An x-ray imaging system e. Visible light
B
Which of the following is the largest source of human exposure to man-made radiation? a. Cosmic rays b. Medical diagnostic x-rays c. Nuclear power-generating stations d. Radioactice fallout e. Radioactive materials in consumer products
B
Which of the following results in the highest annual radiation dose? a. Cosmic rays b. Diagnostic x-ray s c. Microwave radiation d. Nuclear power e. Radiation from inside the earth
B
which of the following is ionizing electromagnetic radiation? a. Beta rays b. Gamma rays c. Microwaves d. Radio waves e. Ultrasound
B
Energy is defined as: a. A force exerted by a body b. Anything that occupies space and has shape c. The ability to do work d. The degree of gravity e. the quantity of matter
C
