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Details

Type of Product:	Science Object
Average Rating:	based on 1 review
Pages:	0
Grade Level:	Elementary School, Middle School

Description

Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Electric and Magnetic Forces SciPack. It explores the ability of electrons to flow, producing an electric current. Negative charges, being associated with electrons on the outer edges of atoms, are far more mobile in materials than positive charges located in the nucleus at the center of an atom. In some materials, such as metals, electrons flow easily, whereas in insulating materials such as glass they can hardly flow at all. At very low temperatures, some materials become superconductors and offer no resistance to the flow of current. In between these extremes, semi-conducting materials differ greatly in how well they conduct, depending on their exact composition. Electric currents occur when charges move through conductors. Batteries and other devices store electrical energy by separating and concentrating charges. Electrical circuits provide a means of transferring electrical energy into other forms of energy such as heat, light, and sound.

Customer Reviews

	Great idea generator
	Reviewed by: Brandy Stewart on January 5, 2012
	This object took all of the experiments you probably did in school with static electricity and current and added more to them. It built the background information behind the experiments in an innovative way that would prepare the teacher not only for the experiments, but for the questions (even those that you don't expect, necessarily) that students may pose before, during and after.

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