Magnetic Math
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 Magnetic Math Download This Lesson Short Description: This book contains hands-on exercises and math problems which allow students to explore magnetism and magnetic fields. The activities include drawing and geometric construction, and introduce students in the use of simple algebra to quantitatively examine magnetic forces, energy, and magnetic field lines and their mathematical structure. Grade Level: 9-12 Mission: Cassini (Saturn), Juno (Jupiter), MESSENGER (Mercury) Science Education Standards: Benchmarks By the end of the 12th grade, students should know that At the atomic level, electric forces between electrons and protons in atoms hold molecules together and thus are involved in all chemical reactions. 4G/H2b* In many conducting materials, such as metals, some of the electrons are not firmly held by the nuclei of the atoms that make up the material. In these materials, applied electric forces can cause the electrons to move through the material, producing an electric current. In insulating materials, such as glass, the electrons are held more firmly, making it nearly impossible to produce an electric current in those materials. 4G/H4ab* Magnetic forces are very closely related to electric forces and are thought of as different aspects of a single electromagnetic force. Moving electrically charged objects produces magnetic forces and moving magnets produces electric forces. 4G/H5ab* Electric currents in the earth's interior give the earth an extensive magnetic field, which we detect from the orientation of compass needles. 4G/H7** (SFAA) National Science Education Standards Physical Science - Content Standard B Grades 9-12 MOTIONS AND FORCES The electric force is a universal force that exists between any two charged objects. Opposite charges attract while like charges repel. The strength of the force is proportional to the charges, and, as with gravitation, inversely proportional to the square of the distance between them. Between any two charged particles, electric force is vastly greater than the gravitational force. Most observable forces such as those exerted by a coiled spring or friction may be traced to electric forces acting between atoms and molecules. Electricity and magnetism are two aspects of a single electromagnetic force. Moving electric charges produce magnetic forces, and moving magnets produce electric forces. These effects help students to understand electric motors and generators. Source: NASA Education