measurements chapter 1 test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| English System | a measurement system used for everyday measurements in the united states
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| SI | the international system of units used by scientists
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| measurement | when someone determines the amount of something using a value and a unit
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| accuracy | when you describe how close a quantity is to its true value
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| precision | describes how close together repeated measurements are
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| resolution | refers to the smallest interval that can be measured
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| unit | a standard amount like a kilometer or a gallon which is used to communicate various quantities
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| distance | describes how far it is from one place to another
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| length | the the amount of space between two point is measured in units of length
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| light year | the distance light can travel in one year
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| meter | a unit of length in SI that equals 100cm
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| parsec | is equal to about 3.26 light years
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| significant digits | meaningful digits in a measured quantity
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| conversion factor | a ratio that has a value of one and is used when setting up unit conversion problems
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| dimensional analysis | a method of using conversion factors and unit canceling to solve a unit conversion problem
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| scatter plot or x y graph | often used to determine if one variable
causes an effect in another variable
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| independent variable | can also be called manipulative variable
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| inverse relationship | when one variable decreases as the other increases
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| graph | a visual representation of data; there are four types
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| direct relationship | is shown on the continuous smooth curve rising from left to right on a scatter plot
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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