Measurement and Units notes
65 notes by 61 users · Page 1 of 2
This Measurement and Units page on GoConqr gathers notes on SI units, prefixes, errors and significant figures. It offers school students material for practising measurement and teachers resources for lessons. There are over 60 notes, made by more than 50 users, for school-level revision. Pick a topic and start reading.
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- Base and Derived Physical Quantities21
- SI Units and Systems of Units118
- SI Prefixes50
- Unit Conversions15
- Dimensions and Dimensional Analysis15
- Measuring Instruments and Techniques20
- Measuring Length, Mass, Volume, Time and Temperature20
- Density13
- Accuracy, Precision and Measurement Uncertainty64
- Significant Figures and Scientific Notation14
- Scalars and Vectors34
Notes
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Units of Measurement
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G481 Motion G481 Motion1.1.1 Physical Quantities and Units(a) some physical quantities consist of a numerical magnitude and a unit(b) use correctly the named units listed in this specification(c) use correctly the following prefi...
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Significant Figures DEFINITION: It is to make sure that the answers you get isn't more precise than the numbers you started with. The significant figures of a number are digits that cary meaningful contributions to its ...
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Significant figures Def: Tell us how to round and to make sure the answers you get isn't more precise than the numbers you started with. 1-4= 0 5-9= you add 1 to the number on the left you have to count the significant figures...
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Measurements Accuracy: Measurement of the deviation of a spread of data with reference to the actual valuePrecision: Measurement of a spread of data from the average value/ Measurement of the reproducibility of results.Systematic ...
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Base Units Kilogram Base SI unit for measuring mass Defined as the mass of a specific platinum-iridium alloy in France Symbol: kg Metre
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Errors Errors are uncertainties in measured quantities which arise from different sources due to limitationsSystematic ErrorsSystematic error arise due to mistakes in the design of an experiment, calibration of instruments n...
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Metric system Kilo 1000 Hecta 100 Deka 10 ...
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Metric System The metric system was developed in the late 1700 it took 200 years to be formed. now is nowed as the international system of units (si) si units are expressed in multiples of 10. Basic units are meter liter and gram.&...
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Metric System METRIC SYSTEM In the late 1700’s, the French Academy of Sciences developed the Metric System. The system is now the International System of Units (SI). Si units are expressed in multiples of 10. BA...
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Metric System The metric system In the late 1700's, the French Academy of Sciences set out to make a simple and reliable measurement system. Over the next 200 years, the metric system was formed. This system is now the Internationa...
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Metric system The Metric System In the late 1700 the french academia of science set out to make a simple and reliable measurement system over the next 200 year The metric system was formed the system is now the internaci...
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significant figures 5,621 x 893= 5,019,553= 5,020,000 218 / 26 = 8.3846154= 8.4 59,411 x 2= 118,822= 100,000 1. All non-zero numbers ARE significant: 33.2 2. Zeros between two non-zero digits ARE significant.:2051 3. ...
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Metric System The metric system was developed in the 1700's by the French Academey of Sciences. It is now known as the International System of Units (SI). SI units are expressed in multiples of 10. The three basic units are: meter,...
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Dimensional Analysis Notes Every measurement has two parts: Numerical Value and Unit.We describe a quantity that has units of length as having the dimension of length [L]. SImilarly for time [T], mass [M] and four others. In any expression, we ...
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metric system The Metric System The metric system was developed in the 1700s by the French Academy of Sciences and took 200 years to develop. SI units are expressed in multiples of 10, the 3 basic units are meter, liter and gram an...
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Significant figures notes - Significant figures are important because they tell us how to round and the important thing is to make sure that the answer you get isn't more precise than the numbers you started with. - When the digits a...
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Metric System Notes The metric system was developed the late 1700´s, this system is now the International System of Units (SI). The units of the (SI) are meters, grams, liters. 1000 100 10 ...
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Physical quantities and Units Scalars and Vectors Scalar - magnitude only Vector - magnitude and direction Vector quantity can be represented by arrow that is drawn to scale Combining two or more vectors makes a resultant Vectors in the same plane...
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Physical Science- 1.1 Metric and Standard Measurement Compare and convert units of measure using the metric system and the standard system.
More Measurement and Units resources
About measurement and units notes
GoConqr OriginalUsing Measurement and Units notes
These notes cover physical quantities, units and measurement in Physics. They include material on SI prefixes, length and time, significant figures, and errors. Some focus on a single topic; others bring several ideas together.
Start with Units of Measurement if you want an introduction to SI base units. For a closer look at reading measurements, Length and time notes includes an example using a ruler. The notes titled Measurements also include material on accuracy and precision.
Make notes part of your revision
Read a section, then cover it and explain the idea in your own words. Return to the note to check what you missed. You could use SI prefixes alongside the notes on variables, density and metric conversions when reviewing units and conversions.
When you want to check your recall, switch to a quiz on the unit page. A mind map or flashcards can offer another way to organise or revisit a topic. Choose a note that fits what you are working on today.
Frequently asked questions
Which note should I start with?
Start with “Units of Measurement” for an introduction to SI base units. If you are working on measurement rather than units, “Length and time notes” includes an example of using a ruler. For uncertainty, the notes titled “Errors” discuss sources of error.
What topics do these notes cover?
The collection includes notes on physical quantities, base and derived units, SI prefixes, measurement errors and significant figures. There are also resources on vectors, dimensional analysis and metric conversions. Some notes cover several related ideas, while others concentrate on a narrower topic.
Are the notes free to use?
Yes. Every resource listed here is free to open and study without an account. The notes were made by GoConqr users, not by GoConqr. A free account also lets you make your own notes, quizzes, mind maps and flashcards, and save your quiz scores.