1. CURRENTS, TIDES, AND WAVES

2. OCEAN CURRENTS
Ocean currents are moving streams of water within the ocean.
There are two types of currents: surface currents and deep currents.
How are surface currents caused?
WIND
How are deep currents caused?
DIFFERENCES IN DENSITY

4. SURFACE CURRENTS THREE THINGS EFFECT SURFACE CURRENTS:
WIND, CORIOLIS EFFECT, AND CONTINENTS

5. DEEP CURRENTS
WHAT CAUSES DEEP CURRENTS TO MOVE IF THE WIND DOESN’T HAVE AN EFFECT ON IT?
WATER DENSITY MOVES THE WATER.
COLD WATER IS MORE DENSE AND IT SINKS AND MOVES
WARM WATER IS LESS DENSE AND IT RISES
NOTE: SURFACE CURRENTS TRAVEL MUCH FASTER THAN DEEP CURRENTS

8. UPWELLING

9. UPWELLING WHY IS UPWELLING IMPORTANT TO US?
THE DEEP CURRENT CARRIES UP NUTRIENTS WHICH IS NECESSARY FOR MARINE LIFE!

10. OCEAN WAVES

11. WAVE FEATURES

12. BIRTH OF A WAVE

14. TSUNAMI
CAUSED FROM EARTHQUAKES ON THE OCEAN FLOOR, VOLCANIC ERUPTIONS, UNDERWATER LANDSLIDES
CANNOT BE FELT BY SHIPS IN THE OPEN OCEAN
HAS A SPEED OF 725 KM PER HOUR
30-40 METERS HIGH

17. TIDES
Changes in water level due to the gravitational pull of the moon on the earth.

19. TIDES
SPRING TIDES – WHEN THE MOON, THE EARTH, AND THE SUN ARE ALL ALIGNED. THERE IS A COMBINED GRAVITATIONAL PULL ON THE EARTHS OCEANS, RESULTING IN HIGHER HIGH TIDES AND LOWER LOW TIDES.
NEAP TIDES – WHEN THE MOON AND THE SUN ARE AT RIGHT ANGLES TO EACH OTHER. GRAVITATIONAL PULL OF THE SUN AND THE MOON WORK AGAINST EACH OTHER RESULTING IN LOWER HIGH TIDES AND HIGHER LOW TIDES.