20-05-2013, 03:11 PM
Magical Magnets Make Electricity
Magical Magnets.pdf (Size: 81.23 KB / Downloads: 63)
Objectives: Students will
• gain an understanding of the concept that magnets and electricity are related forms of energy
• become familiar with terms relating to electricity
• construct a model of a simple generator
• gain an understanding of how generators produce electricity
• use a galvanometer to monitor electrical current
Materials:
• 8 and 16 foot (approximate) lengths of insulated bell wire
• galvanometers
• small bar magnets
• large bar magnets
• large horseshoe magnets
• short lengths (6-8”) of dowel rods with diameters slightly larger than the small and large bar magnets (you will need 2 different
diameters of dowels, one for each size of bar magnet)
• pencils
• activity sheets
Correlations (NSES):
• Content Standard A - Science as Inquiry
- develop abilities to do scientific inquiry
- develop understandings about scientific inquiry
• Content Standard B - Physical Science
- develop an understanding of properties and changes of properties in matter
- develop an understanding of transfer of energy
• Content Standard E - Science and Technology
- develop abilities technological design
- develop understanding about science and technology
• Content Standard F - Science in Personal and Social Perspectives
- develop understanding of science and technology in society
Process Skills:
• Observation
• Comparison
• Collection of data
• Measurement
• Counting
• Research
• Inference
• Investigation/experimentation
• Interpretation of data
• Analysis of data
• Description of findings
• Communication of ideas
• Construction of model
Background Information:
• Main ideas
Principles related to electricity and magnetism such as:
- the flow of electrons through a conductor is electric current
- electricity and magnetism are related forms of energy
- magnetic fields surround magnets
- electricity
- uses/operation of a galvanometer
- additional principles such as voltage, amperes, Ohm’s Law, etc. may be discussed if so desired
- the current produced by the device students construct is the same manner in which generators produce electricity
Principles related to power production