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  #1  
Old 12-18-2005, 04:51 PM
rami876 rami876 is offline
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I need a science fair topic 4 the 8th grade
i want 2 do something about electricity or anything else plz help
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  #2  
Old 12-19-2005, 11:40 AM
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Here you go!



Half gallon paper milk carton (empty and washed out)
Gallon of water
Awl or 10p nail
Masking tape
Ruler
Magic marker
Pair of scissors
Pad of paper and pencil to make notes
Do this experiment over a sink.


Cut off the top of the milk carton.

From the bottom of the milk carton, measure up 1/2 inch and using the awl or 10p nail punch a single hole in the center of the side of the carton

Measure up one inch from the bottom and punch another hole in the center.

Measure up two inches from the bottom and punch a third hole directly above the other two holes.

Measure up four inches from the bottom and punch a final hole in the center of the side.

NOTE: All holes should be the same size.


Take a long piece of tape and tape up all four of the holes.
Put the carton on the edge of the sink with the side with the holes pointing toward the sink.
Mark a line on the carton near the top. Always fill or refill the milk carton with water to that line.
Quickly remove the tape thatís covering all the four holes. Watch what happens. Measure how far away each of the steams hits the sink.

Let all the water empty out. Watch what happens as the water level drops. What happens to the steams of water?
Now tape up all holes. Put the carton back on the sink edge. Refill the carton and remove the bottom tape. Measure how far out the stream goes. Retape the hole, and untape the next hole up; measure how far away the stream goes. Refill the carton with water. Retape the second hole and untape the third hole; measure how far away the stream goes. Refill the carton with water to the same level as before. Retape the third hole and untape the fourth hole; measure how far away the stream goes.


How far away did the streams of water fall from the carton. Was there a difference between the stream from the water from hole the bottom than at the top?

Here's why? Water has weight. The closer to the bottom of the carton, the more water is above and the more weight is pressing down from above. The more weight, the more water pressure. And the more water pressure, the further away the stream will go and the faster it will go.

Hydroelectric facilities are built at the base of dams to take advantage of the high pressure of the water at the bottom of a reservoir. The water pressure is funneled through a tunnel through the dam called a penstock. The water then is focussed on the blades of a turbine. Water pressure of the water turns the turbine, and the turbine turns a generator making electricity.
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  #3  
Old 12-19-2005, 12:47 PM
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That all of the Mentors/Mentors in trainig can get a lesson or two from T_BOC. He always has clear experiments that are on topic. Great Job!
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  #4  
Old 12-19-2005, 02:18 PM
rami876 rami876 is offline
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Thanks But Do U Have Maby A Topic 4 That Idea
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  #5  
Old 12-22-2005, 07:34 AM
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Again, you display tremendous initiative!

You've done exceedingly well as a Trainee Mentor! Minnie is absolutely right! We all have a thing or two that we can learn from T_BOC!
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  #6  
Old 12-22-2005, 10:18 AM
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Default Thank

Thank you all for the comments.And the title is "Hydro power".
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In the begining God made heaven and the earth.And the earth was without form,and void;and the darkness was upon the face of the deep.And the spirit of God moved upon the face of the waters.And God said,"let there be light":and there was light .And God saw the light was good :and God divided the light from darkness.And God called the light day and the darkness night.And the evening and the morning were the first day.

Genesis chapter 1 verses 1-5
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  #7  
Old 12-22-2005, 03:10 PM
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Default T Boc Rocks

WAY TO GO! I must say that others can learn from T-Boc
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  #8  
Old 12-25-2005, 05:13 PM
rami876 rami876 is offline
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does any1 have any other ideas
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  #9  
Old 12-26-2005, 11:53 AM
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You are welcome.And thank you all again but all of our other members and mentors have put on a great perormance also
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In the begining God made heaven and the earth.And the earth was without form,and void;and the darkness was upon the face of the deep.And the spirit of God moved upon the face of the waters.And God said,"let there be light":and there was light .And God saw the light was good :and God divided the light from darkness.And God called the light day and the darkness night.And the evening and the morning were the first day.

Genesis chapter 1 verses 1-5
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  #10  
Old 12-29-2005, 09:46 AM
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i dont like have any details but u could do something on dams and how they make electricity or something on solar power or wind power.
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