1 / 12

Chapter 2

Chapter 2. Heat and Temperature. Heat & Temperature. The omission of "degree" symbol for the Kelvin scale indicates that it is not relative to an arbitrary reference point such as the Celsius and Fahrenheit scales. Measuring Devices. What Feels Cooler ?.

kaspar
Download Presentation

Chapter 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 2 Heat and Temperature

  2. Heat & Temperature • The omission of "degree" symbol for the Kelvin scale indicates • that it is not relative to an arbitrary reference point such as the • Celsius and Fahrenheit scales.

  3. Measuring Devices

  4. What Feels Cooler?

  5. Accuracy refers to how close a measurement is to the true or correct value for a quantity. Precision refers to how close a set of measurements for a quantity are to one another, regardless of whether or not the measurements are correct.

  6. Accuracy vs Precision a a

  7. See Notebook For this example: Larry, Curly and Moe are each given the same type of metal and are asked to measure its density. The actual density of the metal is 3.0 g/ml however they are not told this. They take four sets of measurements and use these to calculate the density of the metal for each set of measurements. Their results are given below. • Who is the most precise? • Who is the most accurate? • What is the percentage error (experimental error) of Larry’s reported density measurement?

  8. Larry, Curly and Moe are each given the same type of metal and are asked to measure its density. The actual density of the metal is 3.0 g/ml however they are not told this. They take four sets of measurements and use these to calculate the density of the metal for each set of measurements. Their results are given below. • Who is the most precise? • Moe, he has the lowest range (0.2). • 2. Who is the most accurate? • Curly, his average is closest to 3.0 (the accepted value). • 3. What is the percentage error (experimental error) of Larry’s reported density measurement?

  9. Percentage Error

  10. Homework • Worksheet Chapter 2 - 2

More Related