Thursday, March 12, 2015

Sergeant Stubby

Ridley did some independent research on an amazing dog named Sergeant Stubby.  Watch his movie to find out what he learned.

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Friday, March 6, 2015

Thursday, March 5, 2015

Circuits and Conductors



Today we did an experiment to find out if something would conduct electricity.  We discovered that a penny, nickel, paper clip, brass fastener, tin cap, and a nail conduct electricity.  They are made out of metal.  Insulators don't conduct, like a popsicle stick or a rubber band.
by Chris



We did an experiment to determine what types of materials conduct electricity.  I found out that a penny conducts electricity.  I thought it would not conduct electricity because it's made out of copper and zinc.  Metals conduct electricity but glass, rubber, and paint don't.
by Owen



 Today we did an experiment with electricity.  First we had a D battery, a few wires, and a mini-bulb.  We realized that pennies are conductors and a dime and metal cap were conductors.  But, you can't complete a circuit with paint.  Or a piece of paper.  Or even a whole stack of it.
by Jackson






Investigating Electrostatic Force

Today we did a science experiment with balloons.  First we rubbed the balloon five times and 27 pieces of confetti stuck to it.  Second we rubbed it against felt and it collected 50 pieces of confetti.  The third time me and Jackson rubbed it a good 20 times and it collected 53 pieces pieces.  Finally we used a big big balloon and it collected 26 pieces.  My conclusion is if you make the balloon bigger it will collect less pieces.
by Ridley
Today we did an experiment using balloons.  First we rubbed a balloon on fabric 5 times.  There was a plate that had little pieces of paper on it.  The balloon picked up 5 pieces of paper.  Second we changed the fabric to a tissue.  Then we rubbed it 5 times, put it over paper confetti, and that time it picked up 10 pieces of paper.  After we rubbed it 10 times.  Then we put it over the paper.  That time it picked up 31 pieces of paper.  Next we made it bigger and put it over the paper.  That time it picked up 112 pieces.  We think that if the balloon is bigger it picks up more confetti.
by Bryer