Term
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Definition
| the rising and falling of the sea surface level |
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Term
| What are the Two factors that create tides? |
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Definition
Gravitational Force
Centripetal Acceleration |
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Term
| What defines gravitational force? |
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Definition
| the force that pulls on anything that has MASS towards the center of the Earth. |
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Term
| What defines Centripetal acceleration? |
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Definition
centrifugal “force” – a function of inertial tendencies. -
When the force of gravity is let go, the Earth pulls BACKWARD in the direction it wants to continue. |
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Term
| What force creates a water buldge in the Earth? |
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Definition
| the moon's gravitational force pulls on the earth creating a buldge. |
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Term
| Does the moon remain stationary while the Earth rotates? What is the result of |
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Definition
| the moon rotates around the Earth and the Earth spins on it’s own axis so NO IT DOESNT. |
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Term
| Is the tidal cycle exactly 24 hours? |
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Definition
| No - 50.4 minutes longer than expected because the moon doesn't stay in one place while the earth rotates on it's own axis. |
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Term
| What magnitude are tides during FIRST and NEW MOON? |
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Definition
High tides are at its highest
low tides are at its lowest |
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Term
| What magnitude are tides at during FIRST and THIRD QUARTER MOON? |
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Definition
High tides are at its lowest
low tides are at its highest |
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Term
| What is a synodic month and how many days does it last? |
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Definition
time it takes from new moon to new moon
It lasts approximentally 29.531 days |
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Term
| What is the sidereal month? How many days does it last? |
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Definition
the number of days it takes the moon to cirlce the earth.
approximentally 27.322 days |
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Term
| is the moon spinning around the earth or the earth spinning around the moon? |
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Definition
| NEITHER, it appears the moon is moving around the earth |
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Term
| Does the moon or the sun's gravtiational pull affect the Earth more? |
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Definition
The Moon's gravitational pull is 2.16 times more of an effect on the tides than the sun because it's closer in distance.
DISTANCE is greater than MASS when discussing force. |
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Term
| What are the three different forms tides can take? |
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Definition
Semidural
Diumal
Mixed Tide |
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Term
| Where is the moon in relation to the Sun during a Neap Tide? |
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Definition
The sun and moon are at right angles
during 1st quarter and third quarter |
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Term
| Where is the moon in relation to the Sun during Spring tide? |
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Definition
directly parallel
during Full moon and New moon |
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Term
| What phase are tidal bulges the highest? |
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Definition
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Term
| What type of tide generally occurs along the world's ocean coasts? |
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Definition
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Term
| What two factors can affect the magnitude of tides? |
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Definition
The shape of the land
The location in relation to amphidomic points. |
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Term
| Where do the highest tides on Earth Occur? |
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Definition
| The Bay of Fundy between equator and north pole on Canada's east coast. Tides can raise up to 10 feet in ONE HOUR ANF 50FT OVERALL! |
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Term
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Definition
| tidal wave that goes up a river or shallow estuary against the current often with an abrupt leading edge |
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Term
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Definition
When deep water waves begin to interact with the bottom, SLOWING DOWN the earth
Example - a day use to be 22 hours long, now it's 24! |
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Term
| What are the largest shallow water waves? How long is wavelength? |
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Definition
| Tides. It's half the Earth. |
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Term
| What is the intertidal zone? |
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Definition
| Costal region between the highest high tide and lowest low tide. |
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Term
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Definition
| between the highest and low tide |
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Term
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Definition
water that gives the appearance that it's still.
Flow switches directions during high or low tide. |
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Term
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Definition
water RUSHING OUT of an enclosed area becuase of tides.
[WATER SPILLING OUT A COFFE CUP] |
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Term
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Definition
| water COMING IN - rushing in an enclosed area because of tides |
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Term
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Definition
| the current observed as water rushes in or out bays and harbor during the tidal cycle. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Why does Bay of Fundy create huge tides? |
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Definition
| Land masses are narrow causes the water to push up |
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Term
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Definition
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Term
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Definition
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Term
| is the syndoic or sidereal month longer? |
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Definition
| The syndoic month is longer. It last 29.531 days while the sidereal month is 27.322 days |
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Term
| Why don't we get two high tides two low tides of equal size? |
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Definition
| If the Earth was covered entirely by water, than we would expect to see this. BUT, because Earth has land masses of different shapes and sizes and an ocean floor THREE different forms of tides occur. |
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Term
| Where would we see a semidirnual tide occur? |
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Definition
Cape Cod, Maachucetts
Greenland |
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Term
| Where would we see a diurnal tide ocur? |
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Definition
Mobile, Alabama
East Coast
Gulf of Mexico |
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Term
| Where would we see a mixed dirunal? |
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Definition
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Term
| Where would we see a semidurnal tide? |
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Definition
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Term
| What are amphidromic points? |
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Definition
| Nodes on tides that have no change in relative height. |
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Term
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Definition
| The average height of LOW water level over several years. |
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