Sister Sister why is the sky so blue?

In this delightful installment of the “Sister, Sister” series, a curious Little Brother poses the question: “Why is the sky so blue?” Big Sister encourages him to explore his imagination, leading to whimsical theories involving blue paint, sky-colored balloons, and even a giant bluebird. Eventually, Big Sister introduces the scientific explanation, discussing how sunlight interacts with Earth’s atmosphere and how shorter blue wavelengths scatter more, making the sky appear blue to our eyes. Recommended age – 6+ years