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| is a way to describe the world with numbers |
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| can help you make a rough measurement of an object |
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| is a description of how close measurements are to each other |
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| when you compare a measurement to the real, actual, or accepted value. |
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| to avoid confusion, scientists established the international system of units. designed to provide worldwide standard of physical measurement for science |
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| is the SI unit of length (one meter - length of a baseball hat) |
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| amount of space an object occupies |
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| measures the amount of matter in the object |
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| is the SI unit for mass (one liter of water) |
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| temperature measurement (SI) |
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| amount of change of one measurement in a given amount of time |
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| displays information in rows and columns so that it is easier to read and understand. |
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| used to collect, organize, and summarize data in a visual way. |
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| shows the relationship between two variables |
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| uses rectangular blocks, or bars, of varying sizes to show the relationships among variables |
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| shows the parts of a whole |
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| Where do you start a measurement? (on what number?) |
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| What is the difference between mass and weight? |
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the mass of an object measures the amount of matter in the object. Your mass wouldn't change unless e.g. you cut your arm off.
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weight is a measurement of force.
your weight would not change unless your gravity changes. e.g. you travel to other planet |
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today's measuring devices are more precise
degree of precision |
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today's measuring devices are more precise
degree of precision |
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| precision and accuracy are important in many medical procedures |
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| precision and accuracy are important in many medical procedures |
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| measurements can be rounded when precision is not needed. |
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| measurements can be rounded when precision is not needed. |
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| reflect true precision of a calculation |
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| measurement with the fewest digits determines the number of significant digits |
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| multiplication or division |
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| significance determiend to the place value of the least precise measurements |
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regular shape: lxwxh
if irregular shape volume by immersion water displacement |
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regular shape: lxwxh
if irregular shape volume by immersion water displacement |
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