💡Topic Summary
A circuit is a path that electricity can flow through. For a circuit to work, it needs a power source like a battery, wires to carry the electricity, and a device that uses the electricity, like a light bulb. The circuit must be complete, meaning there are no breaks in the path. If the path is broken, the electricity can't flow, and the light bulb won't light up.
⚡Part A: Vocabulary
Match the following terms with their correct definitions:
| Term |
Definition |
| 1. Battery |
A. A device that uses electrical energy to produce light. |
| 2. Wire |
B. A path for electrical current to flow. |
| 3. Light Bulb |
C. A source of electrical power. |
| 4. Circuit |
D. A material that allows electricity to flow easily. |
| 5. Conductor |
E. A connection that breaks the flow of electricity. |
| 6. Open Circuit |
F. A material that doesn't allow electricity to flow easily. |
| 7. Insulator |
G. A complete unbroken path for electricity to flow. |
| 8. Closed Circuit |
H. A material that allows electrical signals to pass through in only one direction. |
| 9. Resistor |
I. A device that restricts the flow of electrical current, providing opposition. |
🔌Part B: Fill in the Blanks
Fill in the blanks with the correct words from the box below.
[Battery, Wires, Circuit, Light Bulb, Electricity]
A complete __________ is needed for a __________ to flow. The __________ provides the power, and the __________ carry the power to the __________, which then lights up.
🤔Part C: Critical Thinking
Imagine you are building a simple circuit with a battery, wires, and a light bulb. The light bulb doesn't light up. What are two possible reasons why, and how could you fix them?