ERIC Number: EJ787970
Record Type: Journal
Publication Date: 2008-Mar
Reference Count: 0
Science 101: Do Balances and Scales Determine an Object's Mass or Its Weight?
Robertson, William C.
Science and Children, v45 n7 p68-71 Mar 2008
The typical elementary-school explanation of the difference between mass and weight goes something like the following: Mass is the amount of matter contained in an object. If you travel to the Moon, another planet, or anywhere far away from Earth, your mass doesn't change. Weight is how hard Earth pulls on you. When you travel to the Moon or another planet, the pull of gravity changes, and so your weight changes. Although this explanation is correct, the author never found this definition to be satisfactory. Here he provides a much more complete explanation of the difference between mass and weight by explaining one of Newton's famous laws of motion. (Contains 2 figures.)
Descriptors: Space Sciences, Astronomy, Motion, Science Instruction, Elementary School Science, Scientific Concepts, Physics
National Science Teachers Association. 1840 Wilson Boulevard, Arlington, VA 22201-3000. Tel: 800-722-6782; Fax: 703-243-3924; e-mail: email@example.com; Web site: http://www.nsta.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Education
Authoring Institution: N/A