| Question | Answer |
| Microscopic animals that eat phytoplankton | zooplankton |
| The oceans __________ Earth's temperature by absorbing incoming solar radiation | moderate |
| The study of the oceans is called ___. | oceanography |
| The top of a wave is the | crest |
| Under water volcanic mountains are called __. | guyots |
| The above water portions of underwater mountains are | islands |
| The base of the food web | phytoplankton |
| Of what features do great underwater mountain ranges consist? | ridges |
| Which tide is the highest? Spring or Neap | spring |
| Water is made of these two elements. | Hydrogen and oxygen |
| Oceans cover about _____ of the Earth's surface. | 70% |
| A measure from crest to crest or trough to trough is | wave length |
| valleys between ridges | rifts |
| The two most abundant elements in the ocean water are ___ and ___. | sodium and chlorine |
| ____ of all volcanic activity on Earth occurs in the ocean | 90% |
| narrow, very deep valleys in the ocean | trenches |
| These tides happen when the sun and moon form a right angle with the Earth. | Neap |
| Does water travel with the wave? | No |
| The bottom of a wave is the | trough |
| When ocean water _______ it leaves behind the salt. | evaporates |
| affects the surface salinity of ocean water | evaporation and rain |
| The oceans contain _____ of the Earth's water supply. | 97% |
| Divers keep their bodies warm by wearing | wet suits |
| Water mixed with air forms the | whitecap waves |
| Means self-contained underwater breathing apparatus | SCUBA |
| A measure from the trough to the crest, straight up is the | wave height |
| This is air bubbles separated by a film of liquid | sea foam |
| amount of dissolved salts in ocean water | salinity |
| The line which marks the edge of ocean water on land is called the | shoreline |
| What causes waves? | Wind |
| ____ are smaller branches of the ocean. | seas |
| As water flows through rivers, it picks up small amounts of _____ _____ from the rocks and soil that flows into the oceans. | mineral salts |
| flat, nearly level areas in the ocean | abyssal plains |
| refers to the amount of matter in a given volume of a substance | density |
| Which is more dense salt water or fresh water? | salt water |
| What two factors affect the size of waves? | How hard and how long the wind blows |
| The steps of the water cycle are | evaporation, condensation, precipitation |
| What is the largest ocean? | Pacific |
| Waves are a transfer of | energy |
| The ______ helps keep a scuba diver from rising to the surface. | weight belt |
| land from the continent's edge to ocean floor is | continental slope |
