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What is a way to describe the world with numbers? |
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anseres questions such as how much, how long, or how far |
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What else can measurements do? |
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What can help you make a rough measurement of an object? |
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What can you use to estimate measurements? |
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What word do you often use when you estimate? |
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What is a description of how close measurements are to eachother? |
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What do you do when you compare a measurement to the real value? |
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How do you round a digit? |
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look at the digit to the right of the place being rounded to |
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What digits are deleted if they are also to the right of a decimal? |
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the digits to the right of the digit being rounded |
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What is the number of digits that truly reflect the precision of a number? |
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significant digits or significant figures |
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What digits are always significat? |
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What zeros after a decimal point are significant? |
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Zeros between any other digits are what? |
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What zeros are NOT significant? |
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For what operation do you determine thenumber of significant digits in your problem? The significant digits of your answer are determined by the number with fewer digits. |
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multipication and division |
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For what operation do you determine the place value of each number in you problem? The significant digits of anser are determined by the number that is least precise. |
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How do scientists avoid confustion? |
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they establishe the International systems of Units or SI, in 1960 as the accepted system for measurement |
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as the distance between two points |
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What is the SI unit for length? |
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What is the amount of space an object occupies? |
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How can smaller objects be measured? |
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in centimeters or millimeters |
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The mass of an object measures what? |
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the amount of matter in the object |
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What is the SI unit for mass? |
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What is a measurement of force? |
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What is the SI unit for weight? |
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the measure of the kinetic energy, or energy of motion, of the particles that make up matter |
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Wat is the SI unit for temperature? |
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What is the interval between two events? |
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What is the SI unit for time? |
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What is Time measured in? |
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What is the amount of change of one measurement in a given amount of time? |
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