Biyernes, Agosto 26, 2011

Science Fair Project for 8th Grade


Generators have always been a big help in terms of electrical crisis. Making an electric generator is a good way of learning the principles of generators. It also is an exciting science project. In this science experiment, we will make a different type of generator, a wooden generator

Hypothesis

A wooden generator is possible.

Material

Following are the material that you need in order to construct the 8th grade science fair project:

  1. Wood dowel 3/8" diameter
  2. Wood Dowel 1" diameter.
  3. 1/2 Square foot Balsa wood (1/8" diameter)
  4. Rod magnet 3" long
  5. Insulated copper wire 27 AWG, 200 feet
  6. 1.2 Volt Screw Base light Bulb
  7. Base for the light bulb
  8. Small sand paper
  9. Wood Glue

Procedure

  1. Prepare all the materials needed.
  2. Cut two square pieces from the balsa wood (3.5" x 3.5").
  3. Make a 3/8" hole in the center of each square.
  4. Cut four 1" x 3 7/16.
  5. Cut a 3/4" piece from the 1" wood dowel.
  6. Make a 3/8" hole in the center of it. Insert a 6" long 3/8" wood dowel in the hole
  7. Apply some glue.
  8. Center it and wait for it to dry.
  9. Make another hole with the diameter of your rod magnet in the center of the larger wood dowel piece for the magnet to go through.
  10. Wood dowels after completing the step 4
  11. Wood dowels after completing the step 5.
  12. Insert the magnet in the hole of the wood dowel.
  13. Center it and use some glue to secure it.
  14. Use one large square balsa wood and four smaller rectangular balsa woods to make a box.
  15. Insert your wood dowel into the hole in the center of the box. At this time the magnet is inside the box.
  16. Place the other large square to complete the box.
  17. Apply some glue to the edges and wait for the glue to dry. By now, you have a box and inside the box you have a magnet that can spin when you spin the wood dowel.
  18. Wrap 200 turns of copper wire around the box and use masking tape to secure it.
  19. Remove the insulation from the ends of the wire.
  20. Connect it to the screws of the bulb holder or base.
  21. Insert the light bulb.
  22. Spin the wood dowel fast to get the light.

Results / Analysis of Data

You can answer the following questions:
  1. How does the speed of turning affect the production of electricity?
  2. How does the diameter of wire coil affect the amount of electricity?
  3. How does the number of loops of wire in the coil affect the amount of electricity?
  4. How does the diameter of coil wire affect the electric current?
  5. How do the material used in the construction of an electric generator affect the production of electricity?

Conclusion

Indeed, a wooden generator is possible to make. It is recommended to have an adult supervise or hlp you while doing the project. You can add your conclusion through the results and analysis of data.


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