Pound (mass)

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/pound-mass

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary system?British imperial and United States customary systems of measurement
2. What is the international avoirdupois pound?Defined as exactly 0.45359237 kilograms

Mass: An intrinsic property of matter, quantifying the amount of substance in an object, independent of gravity.
Avoirdupois: The primary system of weights and measures in the US and UK, where a pound equals 16 ounces.
Pound-force (lbf): A unit of force equal to the force of gravity on one pound-mass at sea level, distinct from pound-mass.
Conflation: The act of treating two different things as if they were the same, as historically occurred with mass and weight.