Question

1 multiple choice 2 points marissa can float more easily in ocean water than in water in a swimming pool. why is it easier for her to float in ocean water? ocean water is more dense. ocean water is deeper. there is a larger volume of ocean water to float in. she has a smaller mass in ocean water. 2 multiple choice 2 points most surface ocean currents are caused by tides evaporation prevailing winds salinity differences 3 multiple choice 2 points the surface of earth is covered mostly by solid rock molten rock ice water

Explanation:

1. According to Archimedes' principle, buoyant force \(F_b=

ho Vg\). When \(
ho\) (density of the fluid) is larger, for the same \(V\) (volume of the object submerged) and \(g\), \(F_b\) is larger. Ocean water has higher salinity, so its density \(
ho\) is larger than that of swimming - pool water. A larger buoyant force makes it easier to float.

1. Prevailing winds blow over the ocean surface and transfer momentum to the water, causing the surface ocean currents. Tides are mainly caused by the gravitational pull of the moon and the sun. Evaporation affects the salinity and water cycle but is not the main cause of surface currents. Salinity differences mainly cause deep - ocean currents.
2. About 71% of the Earth's surface is covered by water (oceans, seas, lakes, rivers, etc.), while solid rock (land) covers about 29%, molten rock is inside the Earth, and ice covers only a small part of the Earth's surface compared to water.

Answer:

1. Ocean water is more dense.
2. prevailing winds
3. water