Conceptual Physics Alive: Scaling

Conceptual Physics Alive: Scaling includes a digital video and questions set with answers. Observe Paul Hewitt teach in a classroom with real students, using engaging demonstrations and artwork. In this video, surface area and volume are distinguished with simple demonstrations. Several examples are used to illustrate the proportional changes in surface area and volume when objects are scaled up or down in size. Segment length: 39 minutes Scaling Includes: Hewitt distinguishes area and volume by demonstrating the pouring of water from a spherical shaped container to a cylindrical one. Strength of ants and strength of scaled-up ants compared. Strength of scaled-up ant compared to strength of an elephant. Scaling up a cube to twice size. Demo of eight blocks compared to one block. Cross-sectional area defined. Comparison of sketches of skeletons of cat and an elephant. Sag of toothpick and log compared. In scaling up things, the volume goes up as cube of the increase. Total area compar