Ardms- Spi

ARDMS- SPI The horizontal axis, or x-axis Ans- Runs side to side The vertical axis, or y-axis Ans- Runs up and down Unrelated Ans- Two items that are not associated Related or Proportional Ans- Two items that are associated or affiliated However, the relationship between the items does not have to be specified Directly related or Directly proportional Ans- Two items that are associated such that when one item increases, the other increases Inversely related or inversely proportional Ans- Two items are associated such that when one item increases, the other decreases Reciprocal Relationship Ans- When two numbers with a reciprocal relationship are multiplied together, the result is one Reciprocal numbers are inverse because when one increases, the other decreases For a numerical answer to a question to be comprehensive, it requires a Ans- Unit "Increase by a factor" means Ans- To multiply by that number "Decrease by a factor" means Ans- To divide by that number Scientific or engineering notation is a shorthand manner to represent what types of numbers? Ans- Very large or very small numbers A number in scientific notation form with a positive exponent has a value Ans- Greater than 10 A number in scientific notation form with an exponent of zero has a value Ans- Between 1 and 10 A number in scientific notation form with a negative exponent has a value Ans- Less than 1 10⌃9 Ans- Prefix: giga Symbol: G Meaning: billion 10⌃6 Ans- Prefix: mega Symbol: M Meaning: million 10⌃3 Ans- Prefix: kilo Symbol: k Meaning: thousand 10⌃2 Ans- Prefix: hecto Symbol: h Meaning: hundred 10⌃1 Ans- Prefix: deca Symbol: da Meaning: ten 10⌃-1 Ans- Prefix: deci Symbol: d Meaning: tenth 10⌃-2 Ans- Prefix: centi Symbol: c Meaning: hundredth 10⌃-3 Ans- Prefix: milli Symbol: m Meaning: thousandth 10^-6 Ans- Prefix: micro Symbol: μ Meaning: millionth 10^-9 Ans- Prefix: nano Symbol: n Meaning: billionth List all these metric terms in increasing order: A. mega B. micro C. milli D. hecto E. deca F. deci Ans- micro, milli, deci, deca, hecto, mega List all these metric terms in decreasing order: A. nano B. canti C. giga D. kilo E. hecto F. micro Ans- giga, kilo,hecto, centi, micro, nano Sound pulses travel through biologic tissue, or ______. Ans- Media All waves carry _____ from one location to another. Ans- Energy Sound is a __________ wave in which particles in the medium move. Ans- Mechanical Sound cannot travel through a ______; it must travel through a ______. Ans- Vacuum, medium What does compressed mean? Ans- Squeezed together What does rarefied mean? Ans- Stretched apart Sound travels in a ________ line. Ans- Straight Sound waves are ____________ waves. Ans- Longitudinal What is the propagation speed dependent on? Ans- The medium Are there any biologic effects on tissue? Ans- No Sound waves are identified by Ans- Oscillations in acoustic variables What are the three acoustic variables? (With their units) Ans- pressure - pascals (Pa), density - kg/cm^3, distance - cm, mm If something other than pressure, density, or distance (particle motion) rhythmically oscillates in a wave, then the wave... Ans- Is not a sound wave Sound waves are also known as Ans- Acoustic waves What are the seven Acoustic Parameters? Ans- Period, frequency, amplitude, power, intensity, wavelength, propagation speed Particles move in a direction that is perpendicular to the direction that the wave propagates in what wave? Ans- Transverse wave Particles move in the same direction that the wave propagates in a ____________ wave. AnsLongitudinal When are a pair of waves considered in-phase? Ans- When their peaks and troughs occur at the same time and at the same location Considered "in step" What happens when two waves are out-of-phase? Ans- Their peaks occur at different times, and so do their troughs "out of step" What is interference? Ans- When more than one beam travels in a medium and arrive at the same location at exactly the same time These waves lose their individual characteristics and combine to form a single wave The interference of in-phase waves results in a single wave of _________ amplitude. This is called ___________. Ans- Greater, constructive interference (Larger Wave) The interference of a pair of out-of-phase waves results in the formation of a single wave of _____ amplitude. This combination is called _____________________. Ans- Lesser, destructive interference (Smaller Wave) When frequencies of waves differ, what kind of wave occurs? Ans- Both constructive and destructive interference What do waves transfer from one location to another? Ans- Energy Two waves are traveling in a medium and arrive at a location at the same time. What event takes place? Ans- Interferenc