Standards with the same topic and subject but for other grades
At the macroscopic level, energy manifests itself in multiple phenomena, such as motion, light, sound, electrical and magnetic fields, and thermal energy (5.2 a).
classify objects as being attracted or not attracted to magnets, such as an iron nail, an iron-bearing paper clip, cereal, and a book.
plan and conduct an investigation to determine the strength of an electromagnet (5.4 e)
a current flowing through a wire creates a magnetic field.
construct a simple electromagnet using a dry cell, wire, nail, or other object containing iron (5.4 e)
define a problem and design a solution that uses an electromagnet; demonstrate and explain how the electromagnet works (5.4 e).
A current flowing through a wire creates a magnetic field. Wrapping a wire around certain iron-bearing metals (e.g., an iron nail) and creating a closed circuit is an example of a simple electromagnet. The strength of an electromagnet is mainly affected by the number of coils, the amount of current, the gauge of the wire, and the iron core (5.4 e).
The student will investigate and understand that electricity is transmitted and used in daily life. Key ideas include a) electricity flows easily through conductors but not insulators; b) electricity flows through closed circuits; c) static electricity can be generated by rubbing certain materials together; d) electrical energy can be transformed into radiant, mechanical, and thermal energy; and e) a current flowing through a wire creates a magnetic field.