why is the sky blue?
the air itself is not blue. the blue color is caused by the moisture that vaporizes in tiny particles as it is hit by the sun’s rays. these illuminated particles become bright and mix with the background darkness, so that the sky appears blue.
- does the earth have a circulatory system of water?
- can it be proven that the interior of the earth is permeated with underground streams?
- how does a river start on top of a mountain?
- why doesn't water cover the entire earth?
- did water originally come from the earth's interior?
- why does water flow upwards if it is blocked directly at the source?
- why doesn't evaporated water rise?
- why does more water flow out of an underground stream than from a higher region?
- how does water behave in a container when someone knocks the container?
- how can one dispel the error that claims the sea level is higher than the highest mountain?
- how can one determine the weight of a ball in parts?
- does the length of a pipe influence the speed of the flow through it?
- how can one determine the volume of evaporated water?
- why does smoke change its speed when ascending?
- ändert sich das wassergewicht, je nachdem, wie man eine wassergefüllte rohre neigt?
- how does a water bubble seal itself?
- how does air thicken?