This document provides a series of true/false questions about Earth's oceans. It tests knowledge about where salt in the oceans comes from, the main type of salt, factors that determine salinity and water pressure, typical ocean water temperatures, and tools scientists use to study oceans. The answers provide explanations for each question, clarifying that most salt comes from minerals washed from land, salinity measures salt content, the Dead Sea has the saltiest water, ocean conditions vary most by depth and temperature rather than location, and scientists use submarines rather than planes to directly study oceans.
2. QUESTIONS TRUE OR FALSE: 1.Salt in the ocean comes from rocks. ( F ) 2.Most of the salt is sodium chloride- table salt. ( T ) 3. Water Pressure is the amount of salt water. ( F ) 4. Oceans have the saltiest water on Earth. ( F ) 5. The salinity of the oceans change a lot from place to place. ( F ) 6. Something else that depends on the oceans pressure is depth. ( F ) 7. At the surface the water is warmed by sea animals. ( F ) 75% of the oceans has a temperature between 0 C and 3 C.( F ) 9. To study the oceans scientists use planes and helicopters. ( F ) 10. Some of the conditions of the oceans depends on the water surface. ( F )
3. ANSWERS 1. The salt in oceans come from the minerals that are washed out from the land. 3. The amount of the salt in oceans water is called salinity. 4. The ocean that have the saltiest water is the Dead Sea, in Israel. 5. Doesn´t change much from place to place. 6. Is water depth. 7. At the surface, the water is warmed by the sun and warm air above the surface. 8. Is the 90% of the oceans have the temperature between 0 C and 3 C. 9. Scientist use submarines to study oceans. 10. One of the conditions of the ocean is depth is pressure.
