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29 Cards in this Set
- Front
- Back
What is a Fraction?
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The numerical expression obtained by deviding one number into another.
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What are the three parts to a fraction?
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1. The numerator.
2. The denominator. 3. The Quotient. |
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What is the S.I. System?
What is another name for it? |
System Internationale.
The Metric or MKS system. |
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Give four ways to represent numbers.
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1. fractional.
2. Decimal. 3. Exponentional. 4. Logarithmic |
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What is the decimal system?
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Numbers grouped in multiples of ten.
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What is the Exponential system?
What is another name for it? |
A decimal number multiplied by 10 to an Nth power.
Scientific Notation. |
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What is the Logarithmic system?
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Numbers expressed as xponents of 10.
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What characteristic does a logarithmic scale have?
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It is non-linear and allows large ranges of values to be plotted.
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What is a linear scale?
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Equals lengths on the scale have equal value.
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What is an Ordered Pair?
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The two co-ordinates of a point such that it can be plotted on an X-Y graph.
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What is a ratio?
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The relation in degree or number between two similar things.
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What is a proportion?
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A statement of equality between two ratios. Four quantities, a, b, c, d, are said to be in proportion if a/b = c/d.
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What is the Symbol and Exponent for:
deka hecto kilo |
1. da 1
2. h 2 3. k 3 |
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What is the Symbol and Exponent for:
mega giga tera |
1. M 6
2. G 9 3. T 12 |
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What is the Symbol and Exponent for:
deci centi milli |
1. d -1
2. c -2 3. m -3 |
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What is the Symbol and Exponent for:
micro nao pico |
1. u -6
2. n -9 3. p -12 |
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What are the four Radiological units?
What are their symbols? |
1. The Roentgen. R
2. The Rad rad 3. The Rem rem 4. The curie Ci |
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Give the SI unit names and symbol for:
1. The Roentgen. 2. The Rad 3. The Rem 4. The curie |
1. air kerma Gya
(grey in air) 2. grey Gyt (in tissue) 3. sievert Sv 4. becquerel Bq |
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What is a Roentgen?
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The radiation intensity that will create 2.08 x 10⁸ ion pairs in 1 cc of air.
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What is a second way to define a Roentgen?
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2.58 x 10⁻⁴ C/kg
coulombs of charge per kilogram of air |
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What is a Rad?
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100 ergs per gram.
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What is a Curie?
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The quantity of radioactivity in which 3.7 x 10(10) nuclei disintegrate every second.
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What is the relationship between
Roentgens and air kerma? |
R x .01 = Gya
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What is the relationship between
rad and grey? |
rad x .01 = Gyt
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What is the relationship between
rem and sievert? |
rem x .01 = Sv
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What is the relationship between
curie and becquerel |
Ci x 3.7 x 10(10) = Bq
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How do you determine the number of Significant Figures of a number?
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1. Add all the non-zero numbers
2. then add all the zeroes between the non-zero numbers 3. then add all the zeroes at he beginning of the number. |
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What is the rule to convert larger decimal quantities to smaller?
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Move the point to the left.
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What is the rule to convert smaller decimal quantities to larger?
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move the decimal point to the right.
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