Holt 2009
Terms : Hide Images
| 882103106 | scientific methods | a series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions | 1 | |
| 882103107 | system | a set of particles or interacting components considered to be a distinct physical entity for the purpose of study | 2 | |
| 882103108 | hypothesis | an explanation that is based on prior scientific research or observations and that can be tested | 3 | |
| 882103109 | model | a pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept | 4 | |
| 882103110 | theory | the explanation for some phenomenon that is based on observation, experimentation, and reasoning; that is supported by a large quantity of evidence; and that does not conflict with any existing experimental results or observations | 5 | |
| 882103111 | quantity | something that has magnitude, size, or amount | 6 | |
| 882103112 | SI | Le Système International d'Unités, or the International System of Units, which is the measurement system that is accepted worldwide | 7 | |
| 882103113 | Weight | a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe | 8 | |
| 882103114 | Derived Units | produced by multiplying or dividing standard units, the result of mathematical differentiation | 9 | |
| 882103115 | volume | a measure of the size of a body or region in three-dimensional space | 10 | |
| 882103116 | Density | the ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases | 11 | |
| 882103117 | conversion factor | a ratio that is derived from the equality of two different units and that can be used to convert from one unit to the other | 12 | |
| 882103118 | Dimensional analysis | a mathematical technique for studying dimensions of physical quantities | 13 | |
| 882103119 | Accuracy | a description of how close a measurement is to the true value of the quantity measured | 14 | |
| 882103120 | precision | the exactness of a measurement | 15 | |
| 882103121 | Percentage error | a figure that is calculated by subtracting the accepted value from the experimental value, dividing the difference by the accepted value, and then multiplying by 100 | 16 | |
| 882103122 | significant figures | how reported values are measured. Consists of all the digits known with certainty plus one final digit | 17 | |
| 882103123 | scientific notation | a method of expressing a quantity as a number multiplied by 10 to the appropriate power | 18 | |
| 882103124 | direct proportion | the relationship between two variables whose ratio is a constant value | 19 | |
| 882103125 | inverse proportion | the relationship between two variables whose product is constant | 20 |
