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Published bySabrina Carson Modified over 9 years ago
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Electricity What do we know about electricity?
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YTT Yesterday we successfully lit 1 light bulb using wires, batteries, and light bulbs. Today we will be able to explain the components of an electrical circuit that form a complete loop. We will be able to predict materials that will be electrical conductors or insulators. Tomorrow we will investigate whether materials in our classroom conduct electricity.
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Today’s learning objectives
Be able to explain the components of an electrical circuit that form a complete loop. Be able to predict materials that will be electrical conductors or insulators.
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Checkpoint for understanding:
In yesterday’s activity what was the source of energy? In yesterday’s activity what was the desired object? Battery Light bulb
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Minute paper- Where have we been?
Think: On an index card, draw how to light a light bulb using the least amount of batteries, bulbs, and wires. (Work individually) What is still confusing?
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+ - Battery Wire Wire Light bulb, fan, TV, etc…
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Notes: Current electricity explains how chemical energy moves from the source to the desired object. Define the following Vocabulary Words: Current Closed circuit Open circuit Conductor Insulator © Electricity and Magnetism: Current Electricity. Colgren Communications (2004).
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Notes: + - Battery Circuits in series form a complete electrical loop from the negative end of the battery, to the source, and back to the positive end, using wires. Wire Wire Light bulb, fan, TV, etc…
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Test your self (individual)
Which of the following diagrams form a complete loop and are a circuit in series? See next slides
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Will this set-up form a complete loop and is a circuit in series?
Light Bulb + Battery -
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Will this set-up form a complete loop and is a circuit in series?
X + -
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Will this set-up form a complete loop and is a circuit in series?
+
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Will this set-up form a complete loop and is a circuit in series?
X +
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Will this set-up form a complete loop and is a circuit in series?
X + -
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Will this set-up form a complete loop and is a circuit in series?
+ -
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Will this set-up form a complete loop and is a circuit in series?
X + -
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Will this set-up form a complete loop and is a circuit in series?
X + -
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Complete loop: Analogy
Legs turning the petals on a bicycle= battery Back bicycle tire=light bulb Chain= Wire that forms a complete loop
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Think-Pair-Share Think- individually think of 2 or more examples of conductors and insulators from the video. Pair- with the person sitting next to you, generate a list of the conductors and insulators you each remember from the video. Discuss whether each item has been correctly labeled a conductor or insulator
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Share Share- As a class generate a list of conductors and insulators from the video.
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Series Circuits vs. Parallel Circuits
Watch the following video clip and explain what the difference is between a series circuit and a parallel circuit. ©Getting to Know: Electricity. 100% Educational Videos(1998).
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Homework Students will need to give an example of a series circuit and a parallel circuit from their home environment.
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