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Why Is the Sky Blue?

Why is the sky blue and not purple, green or orange? It's all because of how the Sun's light reaches Earth! Comprehension Questions: 1. You can separate and see all the colors in white light if you shine sunlight through a specially shaped crystal called a _________. 2. True or False: Particles of dust, pollution, or smoke in the air can cause the whole sky to glow red. 3. Why do we only see blue light when we look up on a sunny day? 4. In what pattern does light travel? Answer Key: 1. Prism 2. True 3. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. 4. Waves Learn more at https://spaceplace.nasa.gov/blue-sky/ Find more fun videos, games, and articles about space and Earth science at https://spaceplace.nasa.gov/ Voiceover provided by NASA scientist Dr. Moogega Stricker