Aim: How do we record measurements? Do Now: Record the measurements of A, B, and C 0 A 1 2 B C 3.

Slides:

Advertisements

Similar presentations

Errors and Uncertainties in Biology

Advertisements

Accuracy vs. Precision.

Measurements Length Volume Temperature Mass 1.Will learn to use different measuring instrument 2.Will learn that the smaller the unit increment, the more.

1.2 Measurements in Experiments

Errors and Uncertainties in Biology Accuracy Accuracy indicates how close a measurement is to the accepted value. For example, we'd expect a balance.

UNIT: Chemistry and Measurement

Measurements: Precision, Accuracy and Uncertainty

Objectives The student will be able to: ● Distinguish between accuracy and precision ● Use significant figures in measurements and calculations.

Reliability of Measurements

AP Physics Chapter 1 Measurement.

Lower Sec Science 1 Physical Quantities and Units.

Measurement Notes From pages in the text Honors Intro Physics Friday, Sept. 4 th.

Significant Figures/Significant Digits

Accuracy and Precision SIGNIFICANT FIGURES (Sig Figs)

Accuracy and Precision

1 Parts of a Measurement 1.The value (numerical portion) 2.The unit (describes what units) 3.The name of substance being measured EX: 1 teaspoon salt 2.

Let’s Talk Numbers Uncertainties of Measurements, Scientific Notation, and Significant Figures.

Scientific Measurements “measurement” could be defined as the process or the result of determining the magnitude of a quantity. Measurements can be made.

Warm-up: Are cell phones and ipods allowed in the classroom? What will happen to them if the teacher sees or hears one (that includes headphones)?

CCNA1 v3 Module 2 W04 – Sault College – Bazlurslide 1 Accuracy vs. Precision.

INTRODUCTION The “stuff” every Physics student should know…

Measurements and Errors. Task: Find a textbook And measure it It doesn’t matter which textbook. It should have a length, a width and a height. Use the.

Welcome to Day 8 Aug 26 th, 2009! SWBAT distinguish between accuracy and precision SWBAT compute percent error SWBAT make correct measurements Catalyst.

Measurement. Physics  A branch of science that involves the study of the physical world: energy, matter, and how they are related.

Problem of the Day x m x m x 10 8 km – 3.4 x 10 7 m 3. (9.21 x cm)(1.83 x 10 8 cm) 4. (2.63 x m) / (4.08 x.

1 Accuracy and Precision Notes Chemistry 1. 2 Uncertainty in Measurements There is no such thing as a perfect measurement! All measurements have a degree.

Accuracy, Precision, Significant Figures

Errors and Uncertainties in Science Accuracy Accuracy indicates how close a measurement is to the accepted value. For example, we'd expect a balance.

Bellringer 9 / 9 / 2009 Rephrase the following quotation in your own words “There is nothing so far removed from us to be beyond our reach, or so far hidden.

Accuracy and Precision

1 Honors Physics A Physics Toolkit. 2 Honors Physics Chapter 1 Turn in Contract/Signature Lecture: A Physics Toolkit Q&A Website:

Measuring Keeping track of precision. Two Types of numbers The two types are exact and measured. Exact numbers are arrived at through counting. Example:

Significant Figures Mr. Nelson – Uncertainty The pin is ½ way between the smallest lines on the ruler – what do we do? We have to IMAGINE that there.

Practice ABC Temperature conversions 270 K _____ C 345 K_____ C 50 C _____ K -30C _____ K Known value is 7.5ml Describe.

US Customary Measurement System

Measurements: Precision, Accuracy and Uncertainty.

Measurement and Precision Science 10 SI (System International ) Units This system is used for scientific work around the world It is based on the metric.

Measuring September Accuracy and Precision Accuracy indicates how close a measurement is to the accepted value. For example, we'd expect a balance.

Section 1.2 Section 1.2 Measurement In this section you will: Section ●Distinguish between accuracy and precision. ●Determine the precision of measured.

All measurements are subject to uncertainties. All instruments used are influenced by external circumstances, and the accuracy of a measurement may be.

Making careful measurements allows scientists to repeat experiments and compare results. Section 3: Measurement K What I Know W What I Want to Find Out.

Section 1–2: Measurements in Experiments Physics Pages 10–20.

Precision, Error and Accuracy Physics 12. Measurement  When taking measurements, it is important to note that no measurement can be taken exactly  Therefore,

Accuracy vs. Precision. Calculations Involving Measured Quantities The accuracy of a measured quantity is based on the measurement tool. The last digit.

Uncertainties of Measurements Precision Accuracy Parallax Error.

Precision and Accuracy When making measurements, a scientists have to evaluate their data. One way is to look at the precision and accuracy. Precision.

Objectives  Distinguish between Accuracy and Precision.  Determine the Precision of Measured quantities.

US Customary Measurement System © 2012 Project Lead The Way, Inc.Introduction to Engineering Design.

WHY DO SCIENTISTS TAKE MEASUREMENTS ?

Objectives To learn how uncertainty in a measurement arises

Measuring & Calculating

BELLWORK 9/13/16 1 Tm = 1012 m 1mm = 10-3 m 1Mm = 106 m

Measurement 1.2 Please Do Now

Get a clicker and a calculator and log in

US Customary Measurement System

Section 1-2 Measurement.

1.5 Uncertainty in Measurement

WHY DO SCIENTISTS TAKE MEASUREMENTS ?

Measurement and uncertainties

Two important points in measurement

Scientific Notation Scientists work with large and small numbers. These numbers take up to much space and are hard to put into calculators. We use shorthand.

BELLWORK 9/2/15 How does a scientist reduce the frequency of human error and minimize a lack of accuracy? A. Take repeated measurements B. Use the same.

Measurement Way of assigning a number to a characteristic of an object so it can be compared; always has a unit.

Accuracy, precision, and you

Significant Figures (digits)

Accuracy and Precision

Accuracy and Precision

Notes Measurements Describing Data.

The Scientific Method Imagine a police investigation of a car accident. You are the detective. How would you figure out what happened?

Presentation transcript:

Aim: How do we record measurements? Do Now: Record the measurements of A, B, and C 0 A 1 2 B C 3

Rule: State the digits that you know for certain and estimate one extra digit. This shows the precision of your measuring instrument. Acceptable answers to the do now: A – B – C – 2.80 Certain digit Estimated digit Certain digits Estimated digit B and C are more precise measurements

Worksheet on measurements Take out a ruler

Uncertainties in Measurements In devices: A metal ruler’s length can change with changes in temperature Electric devices can be affected by magnetic fields near them With People: Reading an instrument from an angle (not at eye level) could result in incorrect readings

Parallax – the apparent shift in the position of an object when it is viewed from various angles Precision – the degree of exactness to which a measurement can be reproduced - limited to the smallest division on the scale of the instrument Accuracy – how well the result agrees with an accepted value

Describe the dart player’s throws: x x x x x x xx x Not precise Not accurate Precise Not accurate Precise Accurate

Pages for Additional Reading  Page 25