Chapter 15 Photo: L.Koziol. Objectives Identify methods used by scientist to study the Earths oceans. Discuss the origins and compositions of the oceans.
Tides. Tides Tides are the daily changes in the elevation of the ocean surface. Tides are the daily rise and fall of the Earth’s waters on its coastlines.
–wave –crest –trough –breaker Objectives Describe the physical properties of waves. Explain how tides form. Compare and contrast various ocean currents.
T IDES. G RAVITY Remember, gravity is an invisible force of attraction between two objects. What celestial object is attracted to the Earth? The.
Physical Oceanography
Tides
Millions of Moon Facts (or at least 27 anyway)
