quiz on building a 3d traffic light toy

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What controls the timing of light changes in an electronic traffic light toy?

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Which colors are typically used in a standard traffic light?

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What color indicates that vehicles must stop?

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Which power source is most suitable for a portable 3D traffic light toy?

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What tool is used to connect wires securely in a DIY 3D traffic light toy?

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1. What is the primary function of a traffic light toy?

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Which component is used to emit light in a traffic light toy?

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What material is commonly used to make the body of a 3D traffic light toy?

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quiz on building a 3d traffic light toy
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