In middle school, students learn about fields of energy like magnetic fields and static electric fields. It can be tricky to teach about something the students cannot see. This is precisely the point, students are expected to provide evidence that a field exists.
Students will also study magnetism and discuss the field. Next students will build an electromagnet. They will conduct fair tests to see if they can increase the strength of the magnetic field by changing one variable.
Students will evaluate their design.
Also, students will think about what is happening on an atomic level. Students will make a model to show their understanding. MS PS1-1
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Aligns with Utah SEEd 7th Grade standards also.
Construct a model using observational evidence to describe the nature of fields that exist between objects that exert forces on each other even though the objects are not in contact. Emphasize the cause and effect relationship between properties of objects (such as magnets or electrically-charged objects) and the forces they exert. (PS2.B)
Collect and analyze data to determine the factors that affect the strength of electric and magnetic forces. Examples could include electromagnets, electric motors, or generators. Examples of data could include the effect of the number of turns of wire on the strength of an electromagnet, or of increasing the number or strength of magnets on the speed of an electric motor. (PS2.B)