Friday, February 1 st. Deep ocean currents can be caused mostly by? Coriolis effect Upwelling Surface currents going deeper Differences in density. ATTENTION. Ocean Test will be Tuesday February 5 th !!! . Today’s Mission. Review your notes and review on: Tides, Waves, Currents .
Deep ocean currents can be caused mostly by?
Ocean Test will be
Review your notes and review on:
Tides, Waves, Currents
What causes waves?
Where do you find most waves?
More wind = bigger waves
Longer distances = bigger waves
Depends on 3 Things
The water does not move toward the shore. If it did all the water would be on the shore!
The energy moves toward the shore, but the water itself remains where it was.
EX. Does a submarine get tossed around during a storm?
A rush of water that flows rapidly back to sea through a narrow opening (water breaks through a sandbar)
A tsunami (pronounced soo-NAA-mee) is a series of waves (called a "wave train") generated in a body of water by a pulsating or abrupt disturbance that vertically displaces the water column.
Tsunami's are also mistakenly referred to as tidal waves as they often resemble a tide that keeps rising, rather than cresting waves when they reach shore. However, as they are not actually related to tides the term may be misleading, and its use is discouraged by scientists.
Anthony Liekens 15:30, 28 Dec 2004 (UTC)
What causes Tides?
What’s the difference between Neap and Spring tides?
Tides are caused by the they often resemble a tide that keeps rising, rather than cresting waves when they reach shore. moon and sun’s gravity pulling on the Earth’s water
Earth, Sun and Moon
Watch carefully! they often resemble a tide that keeps rising, rather than cresting waves when they reach shore.
This is a view from above the North Pole.
How many high tides and low tides do we have each day?
If you are at the beach and high tide is at 6:00am, about what time would low tide be? When would the next high tide be?
This is what is happening at the beach!
Have you had a “tide” experience at the beach?
The Math: falls.
7:00 am high tide
________ low Tide
________ high tide
________ low tide
Spring tides falls.
What causes surface currents?
What causes deep currents?
Coriolis falls. Effect
Because the Earth is spinning, the ocean water and wind trying to travel in a straight line from one place to another gets pulled off course.
Coriolis falls. Effect
Notice that the ball in the center of the disk is trying to roll toward the red dot. But because the disk is spinning under the ball, it never makes it to the red dot but is “deflected” to the side.
The top view is showing that the ball actually moves in a straight line.
The bottom view is showing the path the ball took across the disk.
Link to a Coriolis Effect animation
Link to a Coriolis Effect animation part 2
The current falls.
that affects the
is the Gulf Stream!
Can You Find
The gulf stream?
It is a “river” of warm water in the Atlantic Ocean!