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SPI - The Basics

Exam Review

QuestionAnswer
What is the vertical axis of a graph called? A. z-axis B. x-axis C. y- axis D. time axis C. The vertical axis of a graph is called the y-axis and extends up and down.
What is the name of the horizontal axis of a graph? A. z-axis B. x-axis C. y-axis D. red axis B. The horizontal axis of a graph is the x-axis. The x-axis extends side to side
How are scores on the ultrasound board exams related to study time? A. inversely B. conversely C. directly D. unrelated C. Two variables are related when changes in one variable result in the other. When the changes go in the same direction, the variables are directly related. Since scores increase as study time increases, these variables are directly related.
How are caloric intake and weight related? A. inversely B. partially C. reciprocally D. directly D. These two terms are directly related. As food intake increases, weight increases. Similarly, as food intake decreases, weight decreases.
How is weight related to a sonographer's time spent exercising? A. inversely B. conversely C. directly D. unrelated A. Two variables are related when changes in one variable result in changes in the other. When the changes follow in the opposite direction, the variables are inversely related.
What is the reciprocal of 1000? A. one-hundredth B. 1,000 C. 0.001 D. one-millionth C. A pair of reciprocal numbers, when multiplied together, have a value of 1. In this case, 1,000 x 0.001 = 1
What is the reciprocal of 5? A. one-hundredth B. 5 C. 1/5 D. one-millionth C. A pair of reciprocal numbers, when multiplies together, have a value of 1. In this case 5 x 1/5 = 1
What is the reciprocal of 1/10? A. one-hundredth B. 10 C. 1/10 D. one-millionth B. A pair of reciprocal numbers, when multiplied together, have a value of 1. In this case, 10 x 1/10 = 1
A sack contains 6 pounds of flour. The contents of the bag are increased by a factor of 5. How much flour is in the bag? A. 6 pounds B. 11 pounds C. 60 pounds D. 30 pounds D. The term "increases by a factor" means to multiply. 6 x 5 = 30 pounds
A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How many flowers remain? A. 27 B. 0 C. 10 D. 15 C. The term "decrease by a factor" means to divide. 30 / 3 = 10
Which of the following is not a measure of area? A. square cm B. meters squared C. cubic meters D. feet x feet C. Cubic meters are not used to measure area; they are used to measure volume. An area is measured in units of distance squared. Example, a rectangle's area is its length multiplied by its width, and can be reported in square feet, in^2, or square miles.
A sonographer measures the perimeter of an anatomical structure. Which of the following choices is a reasonable value for the measurement? A. 6 cm^2 B. 5 cc C. 15 mm D. 18 dB C. "Perimeter" means the length of the outer boundary of a structure. For example, a square with an edge that is 5 inches long will have a perimeter measuring 20 inches ( four sides, each with a length of 5 inches)
What are the units associated with the circumference of a circle? A. mm B. mm^2 C. cm^3 D. m^4 A. The circumference of a circle is the length of the circle's outer boundary and is measured in units of length.
The volume of a cystic structure is estimated from sonographic data. Which of the following is an acceptable measurement of this volume? A. 6 B. 6 cm C. 6 cm^2 D. 6 cm^3 D. The units of volume are length cubed, such as ft^3 or cubic centimeters. Volume may also be expressed as length to the third power.
The speed of red blood cells traveling through a blood vessel is 750 cm/sec. You are asked to measure this speed in miles per hour. What information would be sufficient for you to complete your task? C. To convert one unit to another requires a factor that relates the two terms.
How much bigger is one billion than one thousand? A. 1,000 times B. 1,000,000 times C. 10 times D.10,000 times B. A billion is one million times larger than a thousand. A million is 1,000,000.
Created by: liliem96
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