Name: _______________________________________________ Pd.: ________ Date: ______________________
Tides and Waves Notes
Tides ______________ Tides are _______________ and
The rise and fall in sea level is called a _____________. _____________ Tides are ________________ than
Caused by a giant ______________. normal
One low-tide/high-tide cycle takes about _____ hrs and Occurs during the _______________ and
_____ min. _______________ quarters.
Tides are caused mainly by the gravitational pull of the Earth, Moon, and Sun form _______________ angles
______________. Gravitational Effect of the Moon
Other Things That Influence Tides Two big bulges of water form on the Earth:
The gravitational pull of the _____________. one directly under the moon
The ___________________ of the sun and the moon another on the exact opposite side
from earth. As the Earth spins, the bulges follow the moon.
_______________ and other factors.
Tides tend to be ______________ where the
gravitational force between the earth and the moon
are the ___________________, along with the
__________________ side of the earth where the
centrifugal force is strongest.
Tidal Range – The ____________________ in ocean level
between high tide and low tide is called the tidal range
What is the Tidal Range?
HT = 30 ft LT = 20 ft Tidal Range =
HT = 20 ft LT = 12 ft Tidal Range =
HT = 50 ft LT = 20 ft Tidal Range =
A Wave is a rhythmic movement that carries
________________ through matter or space.
Spring Tides have the __________________ range
In oceans, waves move through seawater
______________ Tides are ________________ and
_____________ Tides are _______________ than normal
Occurs during the __________ and _________ moons.
Earth, Moon, and Sun are _______________ ________
Gravitational force of the ___________ and _______
Waves On The Beach
Neap Tides have the _______________ amount of
Most of the waves we see are at the beach.
As the wave travels in shallower water it slows and
eventually falls forward as a _________________.
Wind or Storm Waves Wave Movement
The most familiar waves are ____________ generated. When a wave passes through the ocean, individual
Three things determine how large these waves can water molecules move _______ and _________ but
become. they do not move _________________ or
1. ______________ _______________ _________________.
- This is the speed that the wind is blowing. When a wave breaks against the shore, the
- This is usually measured in knots or nautical _______________ outruns the _______________ and
miles per hour. the crest ___________________ - Called a
2. __________________ _________________.
- Refers to the ______________ over which the In this case, water does move forward and
wind blows. backward.
- Winds in some areas may blow strong for long Waves Caused by Wind
periods of time which can produce ______________ When wind blows across a body of water,
waves. __________________ causes the water to move along
3. _______________ with the wind.
- Refers to the __________________ over which the Tsunamis
wind blows. Tsunamis were once called Tidal waves, but they have
- If a wind blows over thousands of miles, the _________________ to do with the tides.
waves can get much ________________ than They are produced by _____________________ and
blowing across a small pond. other seismic disturbances. That’s why they’re also
Parts of a Wave called seismic sea waves.
_______________– highest point of a wave They are very __________, __________ moving waves.
________________ – lowest point of a wave They can have wavelengths of ________ miles.
______________ ________________ – vertical They can travel at over ________ miles per hour! As
distance between the crest and the trough fast as a jet!
_____________________ – horizontal distance The Danger of Tsunamis
between two crests or two troughs In the open ocean, a tsunami may only have a wave
height of a _____________ feet.
As the wave approaches shallow water, it builds to
heights that can reach greater than ________