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Lessons Summaries Preparation 1 - Constructing the Battery Holders Students will assemble two battery holders. The battery holders will be used to hold batteries and as a support base for later experiments in the kit. Key Words - battery box, metal contacts, spring Preparation 2 - Constructing the sliding switch Students will assemble the sliding switch. The switch will be used in later experiments in the kit. Key Words - switch, switch stand, metal pickups, and plastic insert Preparation 3 - Making connecting wires Students will make wires for connecting parts of the kit together. These connecting wire will be used in later experiments. Key words - plastic insulation, enameled wire, nichrome wire, metal connector Preparation 4 - Making the plastic foam cutter Students will make the plastic foam cutter to be used in a later experiment Key words - body, nichrome wire contacts, nichrome wire, metal connectors, copper wire Preparation 5 - Winding the coils Students will wind wire around the bobbins to make electromagnets to be used in later experiments Key words - plastic bobbin, wind, electromagnet, enameled wire, insulating, insulation, metal connector, metal fatigue, sandpaper, coils, turns, electromagnet Preparation 6 - The Electromagnet Stand Students will make the stand to hold the electromagnets. Experiment 1 - Core versus No Core Purpose - Student will compare the strength of an electromagnet and whether or not the coil has a core. Key Words - metal core, 50-wind coil, 100-wind coil, bobbin, connecting wire, coil stand Experiment 2 - Comparing Electromagnetic strength versus number of coils Purpose - Students will compare the strength of electromagnets with the number of winds in the coil. Key Words - current Electromagnets in Series Purpose - Students will compare the strength of electromagnets when both are on at the same time with the same voltage and current. Key Words - series circuit Comparing Electromagnet Strength Versus Number of Batteries Purpose - Students will determine how the strength of electromagnets is related to the number of batteries The Plastic Foam Cutter Purpose - Students will observe electrical energy converted into heat energy Key Words - current, nichrome wire Optional Activity - How Does The Number of Batteries Effect the Current in an Electromagnet? Purpose - Students will measure the current flowing through the circuit and compare it to the number of batteries. Key Words - current, ammeter, multimeter An ammeter or multimeter is needed for this activity. Neither tool is provided with this kit, making this an optional activity. Optional Activity - How Electromagnets Effect a Magnetic Compass Needle? Purpose - Students will observe how electromagnets effect a magnetic compass needle. Key Words - magnetic compass A magnetic compass is needed to complete this activity. A magnetic compass is NOT included with this kit, making this an optional activity. Optional Activity - How Do Different Cores Effect Electromagnet Strength? Purpose - Students will observe how different core materials effect the strength of electromagnets. A variety of different materials may be used as cores for the electromagnet. The different core materials are NOT provided in the kit, making this an optional activity. |
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