Iridescence in Clouds

The video explains iridescence, a phenomenon where light is scattered by small particles like water droplets, ice crystals, or pollen, creating colorful displays in clouds and other objects. It describes how the size of these particles and the sun's angle affect the colors and brightness. Iridescence is also seen in soap bubbles and gasoline on wet pavement. The video highlights that natural iridescence is more common in thin clouds near the sun and encourages viewers to observe it safely.

What is iridescence primarily caused by?

• Refraction of light

• Reflection of light

• Scattering of light by small particles

• Absorption of light

Which of the following is NOT an example of iridescence?

• Soap bubbles

• Thin clouds near the sun

• Gasoline on wet pavement

• A rainbow

How do the colors in iridescence typically appear?

• In a gradient

• Randomly and non-repetitively

• In a fixed pattern

• In a circular pattern

Where is natural iridescence more commonly observed?

• In thick clouds

• In the evening sky

• In thin clouds, especially near the sun

• In the middle of the sky

What precaution should you take when observing iridescence near the sun?

• Use a telescope

• Wear sunglasses

• Avoid looking directly at the sun

• Observe only during sunset