February 15 is Galileo Galilei's birthday. Galileo was an Italian natural philosopher who was the key figure at the beginning of the scientific revolution and made several major contributions to its progress. Find out more and what else occurred on February 15 in science history.| Science Notes and Projects
Learn about the astronomical unit (au or AU) in astronomy. Get the definition, example distances, history, and worked problems.| Science Notes and Projects
Learn what a scientific law is. Get the definition and examples and learn how a scientific law differs from a scientific theory.| Science Notes and Projects
Get a list of shapes and their surface area formulas and volume formulas. Download and print the formulas for easy reference.| Science Notes and Projects
Learn about Newton's laws of motion. Learn about the three laws and get examples of each law in everyday life.| Science Notes and Projects
Get the definition of a force in science. See the units and get examples, including the four fundamental forces.| Science Notes and Projects
