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PVA Science C7
New -- Use this one
| Term | Definition |
|---|---|
| Most of Earth's water is contained in large bodies of salt water called ________. | oceans |
| The ocean floor, or ____________, contains mountains, valleys, and plains. | basin |
| If all the water evaporated from the oceans, a layer of __________ about 60 meters(200 feet) thick would be left on the ocean floor. | salt |
| When volcanoes erupt, they let out water ______________ and other gasses. | vapor |
| Seawater is an important source of _________________. | minerals |
| Drilling rigs are used to extract _______________ and _____________ from the land beneath the sea. | oil and natural gass |
| A stream of water that flows through the ocean like a river is a _________________. | current |
| ________________ currents are driven by the wind. | surface |
| As a wave passes through the ocean, water ____________ move in circles. | particles |
| Each ___________________ may hurl thousands of tons of water against the shore, breaking rocks apart and smoothing the fragments into pebbles and sand. | breaking wave |
| The pull of the Moon and Sun's gravity on Earth causes ___________. | tides |
| Teh combined pull of the Sun and the Moon during times of New and Full Moons causes the highest high tides and the lowest low tides, called _____________ tides. | spring |
| _______________ tides have the smallest range. | neap |
| The underwater edge of a continent is called its _______________. | continential shelf |
| The _______________________ leads steeply down from the continental shelf toward the sea floor. | continental slope |
| The ________________ is a buildup of sediment on the sea floor at the bottom of thecontinental slope. | continental rise |
| One of the flattest places on Earth, the _______ plain, is at the end of the contiental rise. | abysssal |
| A huge underwater mountain is called a _______________. | seamount |
| A V-shaped valley below the ocean is known as a __________. | trench |
| The mountain range rising above the ocean floor of the Atlantic Ocean is known as the _______________. | mid Atlantic ridge |
| Scientists explore the ocean with a _________ map by tracing the patterns of sonar echoes. | sound |
| _________________ are formed when seawater trickles down into the hot, newly formed oceanic crust saturated with minerals. | sea floor vents |
| Offshore drilling for oil and ____________- harms the environment. | natural gas |
Created by:
LisaMay