In 150 BC, Seleucus of Seleucia theorized that the moon causes the tides. Scholars learn about what causes tides by studying the interactions of gravity between the sun, moon, and Earth. They use technology to formalize otherwise...

Young scholars explore ocean tides. They research how the sun, moon and earth affect the tides. Students draw a diagram illustrating low tides and high tides. They discuss the affect of gravitational pull on the oceans.