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Bottle Rocket Project - Materials • Per group (no more than 3 people per group), you will need: – – – – 2 plastic 2-liter bottles (empty and rinsed out) 2 plastic folders A roll of duct tape or reinforced packing tape About a cup of rice (UNCOOKED) in a “zip-lock” bag Number 1 Magnet – any material that contains iron, nickel, or cobalt and it attracted to materials containing iron, nickel, or cobalt Number 2 Pole – the part of a magnet where the magnetic effects are strongest Number 3 Solenoid – coil of wire that produces a magnetic field when carrying an electric current Number 4 Electromagnet – a solenoid with an iron core in the center Number 5 Electromagnetic induction – producing electric current by a changing magnetic field Number 6 Generator – device that uses electromagnetic induction to convert kinetic energy into electrical energy Number 7 Electric Motor – a device that uses electrical energy to do work Number 8 Transformer – a device that increases or decreases the voltage of alternating current Number 9 Electromagnetism – the interaction between electricity and magnetism Number 10 Electric power – the rate at which energy is used to do work; expressed in watts (W) Magnetic Fields Draw the magnetic field on your worksheet. Magnetic Fields Draw the magnetic field on your worksheet. Magnetic Fields Draw the magnetic field on your worksheet. Magnetic Fields What would happen to the magnetic field lines as the N and S poles get closer together? Magnetic Fields Draw the solenoid on your worksheet? Solenoid How can they be made stronger? • Increase the number of coils • Increase the current Electromagnet How can they be made stronger? • Increase the number of coils • Increase the current • Increase the size of the iron core Generator Draw the generator on your worksheet. Mechanical (Kinetic) Energy in Electrical Energy out Coils of wire Magnet Electric Motor An electric motor is the opposite of a generator. Mechanical (Kinetic) Energy out Electrical Energy in Coils of wire Magnet Transformer Draw the following transformer. More turns, higher voltage Fewer turns, lower voltage