The amount of time it takes Earth to rotate on once on its axis would be 24 hours.
Generally, 1. blue is hotter therefore temp and color are correlated, 2. white and blue is lighter then red, color and brightness are related, 3. The larger a star, the brighter and 4. The larger a star the more likely it will be red
The ocean floor spreading showed that it is possible for landmasses to move.
