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Scientists measure length, mass, volume, density, temperature and time using SI untis.
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the distance from one point to another
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the amount of matter in an object
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measure of the force of gravity acting on an object
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the amount of space taken up by an object
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measure of how much mass is contained in a given volume
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The International System of Units (SI) is based off the metric system.
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The measure of the amount of matter in an object is
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mass
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volume
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gravity
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density
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weight
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The force of gravity acting on an object is the
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mass
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volume
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gravity
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density
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weight
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The amount of space taken up by an object or substance is
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mass
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volume
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gravity
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density
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weight
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International Scientific Units
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International System of Units
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International System of Science
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International House of Science
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Which of the following is a standard system based on 10
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miles
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yards
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metric
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volume
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The basic SI unit for measuring weight is a measure of force called
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newton
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pound
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ton
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kilogram
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Weight changes when
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The curve of the liquid in which you use to take a measurement
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SI
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metric system
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meniscus
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graduated cylinder
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How would you measure the volume of an irregular shaped object
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with a ruler
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displacement of water
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on a scale
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by carefully studying it
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The basic SI unit for measuring volume is the
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cubic meter
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newton
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kilogram
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yard
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The measure of how much mass is contained in a given volume is
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mass
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volume
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gravity
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density
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weight
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The official SI unit for temperature is the
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nweton
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kelvin
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second
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kilogram
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When collecting data, scientists use math skills that include all of the following except
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precision
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significant figures
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accuracy
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percent error
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estimation
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The approximation of a number based on reasonable assumptions
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estimates
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accuracy
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precision
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significant figures
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Estimates are useful when
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it is easy to count each individual or object
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when a person isn't good at counting
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when it is impossible to count every individual or object
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when you don't have enough time to count every individual object
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Measurements are never completely precise.
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The numerical average of a set of data
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mean
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mode
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median
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range
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percent error
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The middle number in an ordered set of data
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mean
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mode
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median
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range
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percent error
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The number that appears most often in a list of numbers
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mean
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mode
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median
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range
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percent error
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The difference between the greatest value in the set and the least value
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mean
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mode
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median
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range
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percent error
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Humans or equipment error can produce data that does not fit with the data set. What is this data called?
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reasonable data
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scientific data
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anomalous data
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specific data
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The percent difference between the known value of a substance and its measured value is called
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mode
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median
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range
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weight
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percent error
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A picture of your data is called
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accuracy
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estimation
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graph
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model
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The following are the ages of people in the room.
36 36 37 37 39 40 41
What is the mode?
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36
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37
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39, 40 and 41
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36 and 37
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Scientists use graphs to identify trends, make predictions, and recognize anomalous, or inconsistent data.
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Look at the graph on the page mom has. What type of graph is this?
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linear graph
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non linear graph
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pie graph
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line graph
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3 gerbils weigh 20 grams. How many millograms would the three gerbils weigh?
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200 mg
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2,000 mg
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20,000 mg
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200,000 mg
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A graph that shows data points in a straight line is called a
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linear graph
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non linear graph
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A graph in which the points do not fall in a straight line are called
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linear graph
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non linear graph
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A point that is not part of the trend is an anomalous data point called an outlier.
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an approximation of a number based on reasonable assumptions
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estimate
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significant figures
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precision
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accuracy
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percent error
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refers to how close a group of measurements are to each other
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estimate
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significant figures
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precision
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accuracy
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percent error
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communicate how precise measurements are and includes all digits measured exactly, plus one estimated digit
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estimate
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significant figures
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precision
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accuracy
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percent error
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refers to how close the measurement is to the true or accepted value
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estimate
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significant figures
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precision
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accuracy
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percent error
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Data that does not fit with the data set is called
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scientific data
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reasonable data
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anomalous data
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specific data
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Cheryl took 7 math tests in one marking period. What is the range of her test scores?
89, 73, 84, 91, 87, 77, 94
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Scientists use plans to test their ideas about things they cannot observe directly
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Scientists build __________ to represent a process. They test whether the input and output from the model match the input and output of the system in the natural world.
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map
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graph
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model
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significant figures
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Anomalous data shows on a graph as a(n)
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nonlinear graph
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trend
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outlier
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linear graph