1 / 9

Estimation digits When making measurements:

Estimation digits When making measurements: Record every digit the instrument allows PLUS one more digit which is known as the estimation digit. Ex: Calculate the volume of a wooden block with the following dimensions: Length (L): 4.55 cm Width (W): 9.10 cm Height (H): 2.54 cm

indira-chan
Download Presentation

Estimation digits When making measurements:

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. Estimation digits When making measurements: Record every digit the instrument allows PLUS one more digit which is known as the estimation digit

  2. Ex: Calculate the volume of a wooden block with the following dimensions: Length (L): 4.55 cm Width (W): 9.10 cm Height (H): 2.54 cm L x W x H = 105.1687 cm3 Why does this not Make sense???

  3. F. Significant figures – the digits in a measurement that are expressed as its value. (“Sig Figs” or SF) First we must know how to count significant figures in a given number.

  4. Rules for counting significant figures 1. All nonzero digits are significant Ex: 14,567 SF : 5 Ex: 3245 SF : 4

  5. 2. Zeros – there are three cases. Case 1: Leading Zeros Zeros that precede all non-zero digits NEVER count as significant figures. Ex: 0.0025 SF: 2 SF (2 &5) Example: 0.0005 SF: 1 (5)

  6. Case 2: Captive zeros Any zeros that fall between nonzero digits ALWAYS count as significant figures. Ex: 1.008 SF: 4 Ex: 40, 005 SF: 5

  7. Case 3: Trailing zeros Zeros to the right end of the number are significant ONLY if the number is written with a decimal point (yessy… Deci) . Ex: 1200 SF: 2 Ex: 1200. SF: 4 Ex: 1200.0 SF: 5

  8. Ex: 1200.03 SF: 6 (zeros are captured) Ex: 28.6 Ex: 344. Ex: 910 Ex: 0.04604 Ex: 0.006700

More Related