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37 Cards in this Set
- Front
- Back
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electric current
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the path that electrons follow
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current electricity
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the electricity that flows that way
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electric circuit
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the path an electric current follows
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what causes static electricity
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the buildup of charges on an atom
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a large build up of static electricity can cause...
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spectacular lightning bolts
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lightning is a...
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static discharge
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where does the charge come from?
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collisions between water droplets in a cloud
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why do we see lightning
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when electrons jump from one cloud to another, or from a cloud to the ground, we see lightning
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how can electricity be a useful sorce of energy?
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it must have a steady flow of charges
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how can you compare using electricity to watering a garden?
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water pressure pushes water through the hose
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_________ supplies __________ to make a flashlight work
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Cells/Electricity & charges
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why are metals good conductors?
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the electrons of metals are held loosely by the atoms
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why is plastic not a good conductor?
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it doesn't conduct electricity well
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why are insulators important?
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they protect you from the electric current in the wire
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give examples of insulators
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wood,glass,rubber,plastic
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explain why a wire with cracked insulation should be replaced
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A bare wire that touches paper or cloth could start a fire
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why is the wire to your toaster important?
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it gives your toaster a sorce of current
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what are two things an electric circuit needs to make the electricity flow?
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moving electrons, and complete circuit
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describe what an incomplete circuit is...
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it is when circuit doesn't have all parts connected properly
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what controls the flow of a current?
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a switch
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Who created the first battery?
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Count Allessandro Volta
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Describe how he made the first battery
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he stacked disks of zinc and silver in an alternating pattern. The he put a piece of paper that was soaked in salt water,between every two disks. Wires were attached to each side of the pile.
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what did he call this battery?
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The Voltic Pile
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1st Step
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Title
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2nd Step
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Problem/Question
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3rd Step
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Hypothesis
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4th Step
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Materials
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5th Step
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Procedure
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6th Step
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Data
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Last Step
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Conclusion
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Title...
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Static Strokes (Part One)
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Problem/Question...
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How does a statically charged object effect other objects?
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Hypothesis...
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I think that the plastic wrap with attract to my hair.
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Materials...
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Cling/Plastic wrap and a paper towel
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Procedure...
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1. Place a piece of plastic wrap flat on your desk. 2. Rub the plastic wrap with a paper towel. 3. Pick the plastic wrap up by one corner. 4. Watch what happens!
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Data...
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Draw a picture of the plastic wrap attracting to my hair, then say... The plastic wrap was attracted to my hair.
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Conclusion...
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I accepted my hypothesis. The friction caused the positively charged plastic wrap to lose electrons. The electons transphormed to my hair. It became negatively charged. Opposite charges attract.
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