| A | B |
|---|
| Thor Heyerdahl sailed a raft from peru to Polynesia by following occean currents | This proved that it would be possible for perople from peru to travel to Polynesia by following ocean currents |
| Surface ocean currents | transport many more water than all of the rivers in the world |
| Global winds blow ocean currents near the equater | clockwise |
| coriolis effect | rolling a ball across a turning merry -go-round |
| Brazil Current | ocean current that if deflected by South America |
| Deep currents | are colder and denser than surface currents |
| flow of warm currents from the equater to the poles | causes water from deep currents to rise to the surface |
| warm water currents affect coastal areas | by creating unusually warm climates |
| negative effects of El Nino | rain, flash fluds and mudslides |
| It is important to learn more about EL Nino | because the weather pattern has benn unpredictable |
| crest | highest part of a wave |
| to calculate wave speed | divide the wavelength by the wave period |
| waves increase in height as they approach shore because | the waves interact with the ocean floor |
| trough | lowest part of a wave |
| wavelength | vertical difference between two adjacent high points or two adjacent low points of a wave |
| wave height | vertical distance between the highest and lowest points of a wave |
| undertow flows | in the opposite direction as the wave |
| at high tide | the moon's gravity is pulling ocean water into a bulge |
