Science learning can seem like learning an alien language. Learning science includes learning and using many new languages - scientific practice terms, content-specific vocabulary and the words associated with new systems - like the metric system of measurement!
In this lesson, students are introduced to the metric system and practice using the metric system to measure many different quantities. Because the metric system is the language of measurement for scientific practice world wide almost!
The understanding that standard units are used to measure and describe physical quantities such as weight, time, temperature, and volume CCC - Scale, proportion, and quantity is a crosscutting concept deeply ingrained in this lesson. Additionally, math standards apply too; students work to understand relative sizes of measurement units within one system of units 4.
An understanding of the metric system allows students to participate in effective collection of data to serve as the basis for evidence to answer scientific questions or test design solutions under a range of conditions SP3. This lesson is the introductory lesson to what amounts to year-long and life-long practice of the metric system. Just as in learning a language, best practice is immersion. While the following related lessons help students learn the unique units and measurement practices for different physical quantities, teaching these lessons in context provides more leverage for student learning.
Rather than embarking on a stand-alone unit for the metric system, students learn and retain the information when they prac tice the skills within the context of meaningful investigation. Measurement: Distance. Measurement: Density. To help students explore the metric system, they participate in a series of activities designed to introduce and build knowledge:.
How does basing a measurement system based the on number 10 make using the system more efficient? Have students view slide 5 of the Metric System Presentation to illustrate the power of 10 and preview metric unit prefixes. Slide 6 shows a map of how few countries don't use the metric system, which visually illustrates to students about the importance of sharing a common language for measurement.
To excite students, have them read this brief excerpt from the Metric Conversion Act and remind them that if they don't use the metric system, they are actually breaking the law! For a fun application for using the metric system, read this section's reflection: Metric Ball Using the Metric System for Fun.
This stage of the lesson presents a great place for a quick formative assessment. A quick review of student work Measuring in Metric Student Work using the Metric System Student Handout Notes as a class is a great way to elicit student explanations and check for understanding:. The novel situation in this case is further understanding of how to convert between metric units. For many students, retention of basic metric units that are commonly used meters, centimeters, millimeters, grams, liters, milliliters, etc.
However, for students with advanced understanding, practice with converting units is developmentally appropriate: Metric System Extensions. As noted in the introduction to this unit, this lesson is a first exposure lesson to the metric system.
Appropriate evaluation after implementation of this lesson would include a basic "remembering" assessment such as Measurement Quiz - Multiple Choice or Measurement Quiz. After students learn the unique units and measurement practices for different physical quantities within the context of meaningful investigation, a more comprehensive evaluation would be appropriate.
For review of these concepts, the Matter Measurement Summary is an effective way for students to summarize and explain the concepts associated with measurement as is evident in Measuring Matter Student Work. This Metric Measurement Review Activity helps students self-assess their understanding prior to a comprehensive evaluation: Metric Measurement Assessment. Empty Layer. Home Professional Learning. Professional Learning.
Learn more about. Sign Up Log In.How many stages within the food supply chain can food availability and consumption be measured? What are the disadvantages of identifying under-reporting of usual intake using the doubly labelled water technique? Calculate the body mass index BMI for a patient whose height is 1. The measurement of a specific biochemical status index for a micronutrient such as vitamin C is most likely to be useful in practice to estimate:. Why are some specific indices of iron status such as serum ferritin or transferrin receptors generally considered to be more reliable indices of iron status, than blood haemoglobin levels are?
Why might some biochemical eg plasma or serum indices of micronutrient status give misleading results in people with infections or inflammatory states? For certain micronutrients, 'biochemical functional indices' have been developed, to assess the adequacy of one or more biochemical pathways that respond predictably to changes in status of that specific micronutrient.
One example is serum methylmalonic acid as a biochemical functional index for vitamin B 12 status.Secret society ghana kumasi
What is the primary aim of such biochemical functional index measurements? Instructions Answer the following questions and then press 'Submit' to get your score. Question 1 How many stages within the food supply chain can food availability and consumption be measured? Question 2 What are the limitations of food balance sheets?
Question 3 What is the primary method of dietary assessment used in epidemiological studies? Question 4 What are the disadvantages of identifying under-reporting of usual intake using the doubly labelled water technique? Question 5 Calculate the body mass index BMI for a patient whose height is 1.
Question 6 A common anthropometric measure for infants is: a Standing height. Question 7 Which of the following is the most frequently used anthropometric measure to estimate body mass?
Question 8 The most direct method for measuring body composition is: a underwater weighing. Question 9 The measurement of a specific biochemical status index for a micronutrient such as vitamin C is most likely to be useful in practice to estimate: a The presence or risk of a clinical deficiency, such as clinical scurvy.
Question 10 Why are some specific indices of iron status such as serum ferritin or transferrin receptors generally considered to be more reliable indices of iron status, than blood haemoglobin levels are? Question 11 Why might some biochemical eg plasma or serum indices of micronutrient status give misleading results in people with infections or inflammatory states?
Question 12 For certain micronutrients, 'biochemical functional indices' have been developed, to assess the adequacy of one or more biochemical pathways that respond predictably to changes in status of that specific micronutrient.Which of the following is NOT one of the main purposes of a theory? Explain why phenomena are related and what this means. Predict how the results of research studies will turn out. Suggest several alternative explanations of phenomena.
Precise, complex and testable General, parsimonious and testable. Precise, parsimonious and testable Which of the following is NOT a characteristic of an untestable hypothesis? Appeal to unscientific notions. Circularity Inadequate definition of concepts. A happens before B. All of the above. Scale of measurement. The order in which participants complete a task is an example of what level of measurement?
Nominal Interval Ratio Ordinal What level of measurement would be used if participants were asked to choose their favourite picture from a set of six? Ratio Nominal Interval Ordinal What is the difference between data measured on an interval scale and data measured on a ratio scale? A ratio scale has equal intervals between the points on the scale, whereas an interval scale does not.
An interval scale has a true zero point, so zero on the scale corresponds to zero of the concept being measured. A ratio scale has a true zero point, so zero on the scale corresponds to zero of the concept being measured. A ratio scale puts scores into categories, while an interval scale measures on a continuous scale.
Asking participants to recruit further participants by word-of-mouth is what type of sampling? Stratified random.You need more practice to master units, conversions, and significant figures.
One way to learn the material is to work your way through the units and measurement study guide. You might also want to review how to cancel units.E5s ffxiv
The best way to improve your skills is to practice working problems. Ready for another quiz? See if you can recognize safety symbols used in science labs.
Want to relax and take a quiz just for fun? See which chemical element suits your personality the best. Good job! You missed a few questions, but with a bit more practice, you'll be converting units and working significant figure problems like a pro.
A good way to review is to work your way through the units and measurement study guide. Great work! You did well on the units and conversions quiz. If you have trouble with any specific types of problems, try looking at a worked example problem to review the concepts and see how to proceed. Remember to check your work to make sure an answer makes sense.
You don't want to miss an answer from being careless! Are you up for another quiz? See if you know all the answers in the 20 Questions chemistry quiz.
Chapter 32: Multiple choice questions
If you'd like to try something completely different, see if you understand the science of how fireworks work. Share Flipboard Email.
Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph.There are 9 questions to be attended in 20 minutes. The questions are on Measurement and Instrumentation. The study material is provided along with the remarks for each answer after you complete the examination to help building knowledge on the subject. There are 9 question banks of 9 question each and you should attempt each of these question bank to test your preparedness for the final day of the RRB examination for SSE and JE to be held in Dec.
Read the study material before making an attempt so that you build your confidence in the subject. You have reached 0 of 0 points, 0. The gain of amplifier is. Time limit: 0. Contents hide. You have already completed the quiz before. Hence you can not start it again.
You must sign in or sign up to start the quiz. You have to finish following quiz, to start this quiz:. Results 0 of 9 questions answered correctly Your time: Time has elapsed You have reached 0 of 0 points, 0 Average score. The Answer Key: Sl No. The gain of amplifier is 2. Dynamic pressure arises due to fluid flow. These tubes are widely used for measurement of speed of air flow in air craft, helicopter, boats etc.
This is named after the name of French inventor in 18th century named Henry Pitot.
The sample with the dummy gauge is placed in thermal contact with the test specimen, adjacent to the active gauge. The dummy gauge is wired into a Wheatstone bridge on an adjacent arm to the active gauge so that the temperature effects on the active and dummy gauges cancel each other 8 DPT is used for the testing to find out hair or surface cracks DPT is dye penetration test to make the hair cracks visible. A penetrate solution is applied to the surface with low viscosity which penetrates into the hair crack.
After settling time, developer is applied and the crack emerges out. Answered Review. Question 1 of 9.The use of …………. According to application, instruments can be classified into ………. A …………. For handling greater currents induction wattmeter are used in conjunction with ……………. A moving-coil permanent-magnet instrument can be used as flux-meter by ………………. Induction type single phase energy meters measure electric energy in …….
The resistance in the circuit of the moving coil of a dynamometer should be ……. In a 3-phase power measurement by two wattmeter method, the reading on one of the wattmeter is zero. The power factor of the load must be ………….2000 kawasaki vulcan 1500 fuse box full version
The adjustment of position of shading bands, in an energy meter is done to provide ………. Murray loop test can be used for location of …………. The best device to measure the true open circuit e.Instruments & Measurements Objective Questions MCQ 1-20 --Electrical Engg In Hindi --
A phase shifting transformer is used in conjunction with ………. In order to achieve high accuracy, the slide wire of a potentiometer should be …………. The stator of phase shifting transformer for use in conjunction with an A. In an A. Wagner earthing device is used to eliminate errors due to ……….Luxman l505ux ii review
Mutual inductance can be measured by using ……………. The full range of audibility in audio frequency oscillator is …………. The detectors used in optical sensors are …………. Capacitance sensor can measure very small displacement. Bourdon tube is used for the measurement of gauge pressure of ……………. The nominal ratio for a current transformer is given by ………….Home Consumer Insights Market Research. Nominal, Ordinal, Interval and Ratio are defined as the four fundamental levels of measurement scales that are used to capture data in the form of surveys and questionnaires, each being a multiple choice question.
Each scale is an incremental level of measurement, meaning, each scale fulfills the function of the previous scale and all survey question scales such as LikertSemantic DifferentialDichotomous etc, are the derivation of this these 4 fundamental levels of variable measurement.
Ordinal scale has all its variables in a specific order, beyond just naming them. Interval scale offers labels, order, as well as, a specific interval between each of its variable options. This scale is the simplest of the four variable measurement scales. Calculations done on these variables will be futile as there is no numerical value of the options. There are cases where this scale is used for the purpose of classification — the numbers associated with variables of this scale are only tags for categorization or division.
Calculations done on these numbers will be futile as they have no quantitative significance. Nominal scale is often used in research surveys and questionnaires where only variable labels hold significance. There are two primary ways in which nominal scale data can be collected:. In both the cases, the analysis of gathered data will happen using percentages or mode,i.
It is possible for a single question to have more than one modes as it is possible for two common favorites can exist in a target population. Ordinal Scale is defined as a variable measurement scale used to simply depict the order of variables and not the difference between each of the variables.
These scales are generally used to depict non-mathematical ideas such as frequency, satisfaction, happiness, a degree of pain etc. Descriptional qualities indicate tagging properties similar to the nominal scale, in addition to which, ordinal scale also has a relative position of variables. Status at workplace, tournament team rankings, order of product quality, and order of agreement or satisfaction are some of the most common examples of Ordinal Scale.
These scales are generally used in market research to gather and evaluate relative feedback about product satisfaction, changing perceptions with product upgrades etc. For example, a semantic differential scale question such as:. Ordinal scale data can be presented in tabular or graphical formats for a researcher to conduct convenient analysis of collected data.
These methods are generally implemented to compare two or more ordinal groups. In the Mann-Whitney U test, researchers can conclude which variable of one group is bigger or smaller than another variable of a randomly selected group. While in the Kruskal—Wallis H test, researchers can analyze whether two or more ordinal groups have the same median or not.
This scale not only assigns values to the variables but also measures the rank or order of the variables, such as:. Learn about: Nominal vs. Ordinal Scale. Interval Scale is defined as a numerical scale where the order of the variables is known as well as the difference between these variables. Variables which have familiar, constant and computable differences are classified using the Interval scale.
These scales are effective as they open doors for the statistical analysis of provided data. Mean, median or mode can be used to calculate the central tendency in this scale. The only drawback of this scale is that there no pre-decided starting point or a true zero value.
Interval scale contains all the properties of ordinal scale, in addition to which, it offers a calculation of the difference between variables. The main characteristic of this scale is the equidistant difference between objects. All the techniques applicable to nominal and ordinal data analysis are applicable to Interval Data as well. Apart from those techniques, there are a few analysis methods such as descriptive statistics, correlation regression analysis which is extensively for analyzing interval data.Oromia investment proclamation pdf
Descriptive statistics is the term given to analysis of numerical data which helps to describe, depict or summarize data in a meaningful manner and it helps in calculation of mean, median, and mode. Ratio Scale is defined as a variable measurement scale that not only produces the order of variables but also makes the difference between variables known along with information on the value of true zero.
It is calculated by assuming that the variables have an option for zero, the difference between the two variables is the same and there is a specific order between the options. With the option of true zero, varied inferential and descriptive analysis techniques can be applied to the variables.
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