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23 Cards in this Set
- Front
- Back
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A ___ __ is a device that produces electric current by a one-way chemical reaction.
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voltaic cell
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An _______ collects the positive and negative charges produced by the cell.
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electrode
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An _____ is a liquid that conducts electricity. (usually salt water)
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electrolytes
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The ______ in the cell dissolves in the water, leaving electrons behind. (negative charge)
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zinc
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The ____ in the cell gives up a positive charge.
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silver
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In a voltaic cell, the negative electrode is called the ___.
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anode
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In a voltaic cell, the positive electrode is called the ___.
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cathode
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What was wrong with Volta's original cell?
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The salt water was evaporate too quickly.
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How did Volta solve the problem of the evaporating salt water?
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He immersed the cells in a jar of salt water (this type of cell is called a wet cell).
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What is the disadvantage of wet cells?
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Even though they are easy to make, you can't carry them around because of all the liquid (salt water).
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How is the dry cell made?
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Instead of liquid (saltwater), it is made with a jellylike paste.
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_______ made the chemical combination used in dry cells.
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Leclanche
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________ are places on the outside of the cell where the current flows.
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terminals
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When two or more cells are connected together as a source of current, they form a _____.
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battery
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The __ ___ cell is an example of a storage cell.
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lead-acid
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The battery in a _____ is an example of a storage battery.
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car
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An _____ is a special generator that recharges a battery when the motor of a car is running.
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alternator
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A ______ ____ or solar cell produces an electric current when light shines on it.
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photovoltaic cell
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What are the advantages of a solar cell?
1 2 3 |
1. simple to make
2. reliable 3. cost nothing to run |
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The principle of _____ ____ is used to convert mechanical energy into electrical energy.
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electromagnetic induction
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___ _______ will convert mechanical energy into electrical energy.
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Electric generators
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In ________ power plants, the generators are turned by rushing water.
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hydroelectric
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________ discovered the concept of thermocouple.
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Seebeck
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