Rain clouds are generally dark gray because light cannot penetrate them due to the deep and densely packed water droplets and ice inside the cloud. Generally, the color of a cloud depends on the cloud’s relationship to the sunlight: Clouds appear gray when they block sunlight. The thicker the cloud, the more light it blocks. When a cloud is about 3,000 feet (914 meters) thick, hardly any sunlight will make its way through the cloud.
- Why do jet airplanes leave white trails in the sky?
- How do clouds float?
- Can it rain cats and dogs?
- What are clouds made of?
- Where is the windiest place on Earth?
- How do we see the wind?
- Why is the sky blue?
- How does the greenhouse effect work on Earth?
- Is it true that at one time there was no oxygen?
- Why is the ozone layer important to Earth?
- What is air made of?
- Why is Earth mostly crater-free compared to the pockmarked Moon?
- Why does the Moon follow us when we’re driving?
- How does the Moon affect the ocean tides?
- Does the Moon really have volcanoes?
- How high could you jump on the Moon?
- What are moonquakes?
- Is there a Man in the Moon?
- Which planets experience the greenhouse effect?
- What is the Moon?
