Weather Things: Rainbows

Rainbows are optical phenomena formed by sunlight interacting with raindrops, causing light to refract, reflect, and disperse into colors. The visibility and position of rainbows depend on the sun's position. Primary rainbows have red on the outside and violet on the inside, while secondary rainbows have reversed colors and are fainter. Supernumeraries are additional color patterns seen inside the primary rainbow. Rainbows can also be used to predict weather, indicating rain or storms based on their appearance and position relative to the sun.

What causes the formation of a rainbow?

• Refraction and reflection of sunlight in raindrops

• Reflection of light on a mirror

• Diffusion of light in the atmosphere

• Absorption of light by clouds

How does the position of the sun affect the visibility of a rainbow?

• The higher the sun, the more visible the rainbow

• The higher the sun, the lower the rainbow appears

• The position of the sun does not affect the rainbow

• The lower the sun, the less visible the rainbow

What is the order of colors in a secondary rainbow?

• Blue on the inside, orange on the outside

• Red on the inside, violet on the outside

• Violet on the inside, red on the outside

• Green on the inside, yellow on the outside

What are supernumeraries in the context of rainbows?

• Extra bright colors outside the primary rainbow

• Dark areas between the primary and secondary rainbows

• Additional rainbows that appear during a storm

• Repeating patterns of purple and blue inside the primary rainbow

What does a rainbow in the morning typically indicate about the weather?

• Clear skies ahead

• Rain to the west

• Sunny weather in the east

• Storms moving away