Learning Goals
Learning Goals:
- Detect the relative strength of magnetic fields at different distances from a magnet.
- Explain the energy transformations occurring in each part of a circuit.
- Identify three different methods for generating electricity.
Materials List
Handouts
- Three Ways to Generate Electricity Worksheet
Classroom Supplies (per groups of 4)
- 20mL Iron filings (example)
- 2 wires with alligator clips
- Multimeter
- Computer with internet access
- Compass (recommended or recommended)
- Ruler
- Roll of masking/painter’s tape
- 3 Bar magnets
- Plastic box frame (example)
- Various other magnets (e.g. refrigerator magnets – weak magnets work best)
- Small electric motor with plastic sleeve or wheel attachment
- Small electric motor with metal cover/housing removed
- “Grain of Wheat” bulb
- Clamp light with 100 W halogen bulb
- Small photovoltaic cell (between 1.5 V and 3V)
- Protractor
- Batteries (1 each): D cell, AA, AAA
Important Links
Next Generation Science Standards
Next Generation Science Standards
MS-PS2-3
- Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.
MS-PS2-5
- Conduct an investigation and evaluate the experimental design to provide evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.