_________________ is a technological system that uses sound waves to calculate the distance to an object on the deep ocean floor.

The smooth, nearly flat region of the ocean floor that is covered with thick layerws of sediments is called an

The ___________________ is made up of a range of mountains that winds through the ocean.

Most waves form when _____________ blowing across the water's surface transmits their energy to the water.

The horizontal distance between crests of a wave is the _____________

The vertical distance fromt the crest to the trough is the ________________________________ which can be very destuctive in a tsunami

A tsunami is cause by an ___________ beneath the ocean floor.

The strong roots of dune plants, such as beach grass , hold the sand in place and reduces beach __________

The daily rise and fall of Earth's water on it's coastlines are called ______________.

Tides are cause by the interaction of the__________________,________________,and the ________________________.

The greatest difference between the heights of high and low tide are called a ________________ _________________ .

The least difference between the heights of the high and low tide are called a __________ ______________.

Tidal power can be a useful part of an overall plan to generate________________-.

The total amount of dissolved salts in a sample of water is the ____________ of that sample of water.

________________ ________________ (table salt) is the salt present in the greatest amount in ocean water.

_______________ need carbon dioxide and sulight for pohtosynthesis so their growth in the ocean is limited.

As you descend through the ocean, the water temperature _____________.

A ___________ is a large stream of moving water that flows through the oceans.

In the northern hemisphere, the __________ ____________ causes the current to curve to the right.

The largest and most pwerful surface current in the northern Atlantic is called the ______- ___________.

____________ _________ is the abnormal climate event that occures every two seven years in the Pacific Ocean.

The currents that cause chilly waters to creep slowly ac ross the ocean floor are caused by differences in the __________-- of the ocean water.