Savvas 7th Grade Chapter 2 Review - Jennifer Potter | Library

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Weight is a measure of how much mass is contained in a given volume.

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On the Kelvin scale, water freezes at 0°C and boils at 100°C.

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An object will float if it is less dense than the surrounding liquid.

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The balance is the tool used to measure mass.

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The basic unit for measuring volume is the kilogram.

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Scientists control changes in the responding variable.

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To help you see what the data from an experiment mean, you could use a(n) graph.

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Line graphs display data that show how the responding variable changes in response to the manipulated variable.

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A point that does not fall exactly on a graph line is a(n) anomalous data point.

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Some systems have feedback.

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Scientists use models to understand things they can observe directly.

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When they use models, scientists keep in mind that predictions based on models are certain.

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What happens in a system is called input.

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What would you be most likely to measure by immersing an object in water and seeing how much the water level rises?

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Which is a common unit of density?

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On what number is the metric system based?

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A low percent error indicates that the result you obtained is:

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Which term refers to how close a group of measurements are to each other?

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Which of the following is the middle number in a set of data?

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If you add up the values in a data set and then divide the sum by the total number of values, the result will be the

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On which of the following graphs do data points yield a straight line?

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When a graph does NOT have any clear trends, it probably means that the variables are which of the following?

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On a nonlinear graph, the data points are never which of the following?

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Where do you conduct a science investigation in the field?

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When doing a science investigation, what should be your chief concern?

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Scientists often rely on a(n)_______   when they cannot obtain an exact
number.

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When you multiply measurements, the answer should only have the
same number of significant figures as the measurement with the _______  significant
figures.

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A reliable measurement is both _______ and precise.

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Calculating percent error and checking the reasonableness of data are two of the
math tools scientists use to analyze_______ .

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_______ data are data that do not fit with the rest of a data set.

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The significant figures in a measurement include all digits measured exactly, plus one 
_______ digit.

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All systems have input, _______  , and output.

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_______ is the material or energy that goes into a system.

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A(n)_______ is a group of parts that work together to perform a function or produce a result

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Output that changes a system in some way is called_______ .

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You should keep your lab work area clean and _______ 

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Doing good _______   ahead of time helps you stay safe during science investigations.

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When an accident occurs, the first person you should tell is your _______.

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Be sure to wash your _______  thoroughly after working in the laboratory.

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Wear safety_______  to protect your eyes from chemical splashes.