Part of the light spectrum UV Rays can cause chemical changes in rubber materials.

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Multiple Choice

Part of the light spectrum UV Rays can cause chemical changes in rubber materials.

Explanation:
UV light represents a high-energy portion of the spectrum that can directly alter rubber polymers. When these energetic photons strike rubber, they can break chemical bonds and trigger reactions with oxygen (photo-oxidation). Over time, this changes the rubber’s structure—leading to brittleness, cracking, or changes in elasticity and surface tackiness. In autos, sunlight can thus degrade rubber seals around the windshield. The other options aren’t about the energy form causing these changes: a substrate is just the base material, sidelites are parts of the window, and tackiness is a consequence of degradation rather than a type of light.

UV light represents a high-energy portion of the spectrum that can directly alter rubber polymers. When these energetic photons strike rubber, they can break chemical bonds and trigger reactions with oxygen (photo-oxidation). Over time, this changes the rubber’s structure—leading to brittleness, cracking, or changes in elasticity and surface tackiness. In autos, sunlight can thus degrade rubber seals around the windshield.

The other options aren’t about the energy form causing these changes: a substrate is just the base material, sidelites are parts of the window, and tackiness is a consequence of degradation rather than a type of light.

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