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. It occurs in clouds, soap bubbles, and gasoline on wet pavement. The colors depend on particle size and sun angle. Iridescence is more common in thin clouds near the sun. Observers are advised to look for it without staring directly at the sun.

What is iridescence primarily caused by?

• Reflection of light

• Scattering of light by small particles

• Absorption of light

• Refraction of light

Which of the following does NOT affect the colors of iridescence?

• Type of particles

• Angle of the sun

• Temperature of the air

• Size of the scattering objects

Where else can iridescence be observed besides clouds?

• In snowflakes

• In soap bubbles

• In rainbows

• In fog

How does natural iridescence typically change over time?

• It fades away

• It changes unpredictably

• It becomes more vivid

• It remains constant

What is a safe way to observe iridescence in clouds?

• Observing the edges of thin clouds

• Using a telescope

• Wearing sunglasses

• Looking directly at the sun