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2000
Most people know that the flip of a switch will power up toys, appliances and lights with electricity and enable them to work. But why? What is it about electricity that makes it so powerful and so dangerous? Students will learn the basic concepts of positive and negative charges, current flow and open/closed circuits, and discover why getting a…
Descriptors: Demonstrations (Science), Electricity, Hands on Science, Intermediate Grades
2000
Most people know what magnets do. Sometimes they stick together, sometimes they push apart and sometimes they don't do anything at all. But why do magnets act the way they do? Students will learn about the role of atoms in magnetism and why certain substances are magnetic while others are not. They will also discover some of the many ways…
Descriptors: Demonstrations (Science), Electricity, Hands on Science, Intermediate Grades
Characteristics of Waves. Physical Science in Action[TM]. Schlessinger Science Library. [Videotape].
2000
Waves are disturbances that transfer energy from place to place. All waves have amplitude, wavelength and frequency regardless of whether they are mechanical waves, electromagnetic waves or waves in the ocean! Students will learn more about the role waves play in everyday life and why understanding them is so important. With fun demonstrations and…
Descriptors: Acoustics, Demonstrations (Science), Electricity, Hands on Science
