Parhelic Circle

The video introduces sun dogs and parhelic circles, explaining that parhelic circles are harder to spot but equally fascinating. These circles form through the reflection of sunlight on ice crystals in cirrus clouds, creating a white ring around the horizon. The position of the sun affects the height and size of the parhelic circle. Although they blend with clouds and are not always visible, they can be observed under the right conditions.

What are sun dogs also known as?

• Ice crystals

• Cirrus clouds

• Parhelic circles

• Parhelia

What natural phenomenon forms a circle around the horizon?

• Halo

• Sun dogs

• Parhelic circle

• Rainbow

How do parhelic circles form?

• By refraction of sunlight

• By reflection of sunlight on ice crystals

• By scattering of sunlight

• By absorption of sunlight

What happens to the parhelic circle when the sun is high in the sky?

• It becomes larger

• It changes color

• It becomes smaller

• It disappears

What is the color of a parhelic circle?

• Blue

• Red

• White

• Yellow