Cirrus Clouds

Cirrus clouds are thin, wispy clouds that are found at high altitudes. They are composed of ice crystals and are often seen in fair weather, but can also indicate the approach of a change in the weather. Cirrus clouds are the highest of the main cloud types and are commonly found at altitudes above 20,000 feet.

Characteristics of Cirrus Clouds

Cirrus clouds have several distinct characteristics:

1. Appearance: They appear as delicate, wispy strands or patches in the sky.
2. Altitude: They are found at high altitudes, typically above 20,000 feet.
3. Composition: Cirrus clouds are made up of ice crystals rather than water droplets.
4. Weather Indicators: They can signal the approach of a change in the weather, such as the arrival of a warm front or the approach of a storm.

Study Guide

When studying cirrus clouds, consider the following key points:

1. What are cirrus clouds made of?
2. Where are cirrus clouds typically found in the atmosphere?
3. What do cirrus clouds indicate about the weather?
4. How do cirrus clouds appear in the sky?

Additionally, it can be helpful to observe cirrus clouds in the sky and take note of any changes in the weather that occur after their appearance.