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41 Cards in this Set
- Front
- Back
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How close a measurement is to the true or accepted value
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Accuracy
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An approximation of a number based on reasonable assumptions
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Estimate
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How close a group of measurements are to each other
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Precision
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The Digits in a measurement that have been measured exactly PLUS one whose value has been estimated
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Mean
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The numerical average
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Mean
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The middle number in a set of data
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Median
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A calculation used to determine how accurate an experimental value really is.
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Percent Error
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The number that appears often in a list of numbers
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Mode
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When do scientist have to rely on estimates?
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If their answers are not precise
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Why are both accuracy and precision important in making a measurement?
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So you can tell if it is right or if it is harmful
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What do the scientific figures in a measurement include?
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mass
volume density percent error |
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What is percent error calculation used to determine?
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How off you are and accurate
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What are three ways to calculate average?
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mean
median mode |
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Modern scientists use a version of the metric system called the International System of Units, abbreviated as?
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SI Units
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The measure of the force of gravity acting on an object is called?
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mass
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The _____ system is a system of measurement based on the number 10?
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SI
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The amount of space an object takes up is called
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volume
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The measure of how much mass is contained in a given volume is
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gravity
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The curve of the top surface of water in a graduated cylinder is called
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meneces
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The measure of the amount of matter an object contains is called
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mass
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how are line graphs used to show how two variables are related
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how one variable changes acording to another
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what does a line of best fit emiphisez
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tren in data
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what does slope tell you about changes in x and y
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HOW MUCH X CHANGES ACCORDING TO Y
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why are line graphs powerfull toold in scince
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to reveal patterns and trends
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a line graph in which data points yield a straight line is called
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linear
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the steepnes of a graph is called
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slope
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the point where the x axis and the y axis cross is called _____of a graph
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origin
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a(n)______is a pair of numbers used to determen the position of a point on a graph
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coordinate
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a line graph in which the data points do not fall along a straight line is called a
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nonlinear
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a picture of info from a data table is called a
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graph
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the_____is the graph line that runs from left to right
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horizontal
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a smooth line drawn between points on a graph to reflect the general pattern of data is called the ___
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line of best fit
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the point on a graph showing the location of a piece of data is called a
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data point
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the___is the graph line that runs up and down
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vertical axes
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a book is 15 cm long 4cm wide and 20 cm high what is the volume of the book
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write on paper
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a box is 12 cm long 12cm wide and 25 cm high find the volume
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same as other write on paper
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an object has a volume of 8 cm3 and a mass of 48 grams find the density
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write on paper
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an object has a mass of 72 grams and a volume of 20 cm3 find the density
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write on paper
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Convert 3.8kg to grams
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write on paper
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Convert 2,700mL to L
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write on paper
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Convert 10 cm to mm
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write on paper
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