Composition of Ocean Water

What is the most common salt found in ocean water?

• calcium carbonate

• potassium

• magnesium

• sodium chloride

Which three factors are most important in determining the composition of ocean water?

• temperature, salinity, and density

• volume, mass, and density

• mass, salinity, and density

• volume, temperature, and density

Which statement best explains the relationship between an area's geography and the temperature of its surface water?

• Areas at high latitudes have the warmest water because their days are the longest.

• Areas at high latitudes have the warmest water because they have the longest seasons.

• Areas at low latitudes have the warmest water because they receive the most direct sunlight.

• Areas at low latitudes have the warmest water because they have the least change in temperature throughout the year.

Tags

NGSS.MS-ESS2-6

Which statement best describes how the temperature of the ocean's surface water varies?

• Areas at high latitudes have the coldest water.

• Areas with a low salinity have the coldest water.

• Areas close to the poles have the warmest water.

• Areas with a high density have the warmest water.

Tags

NGSS.MS-ESS2-6

What conditions would most likely cause a decrease in the salinity of ocean water?

• high rates of evaporation

• freezing of glaciers

• extremely hot weather

• a river flowing into the sea

What conditions would cause an increase in the salinity of ocean water?

• high rates of evaporation

• thawing of glaciers

• cold weather

• a river flowing into the sea

Which statement best explains the relationship between an area's geography and the temperature of its surface water?

• Areas at high latitudes have the warmest water because their days are the longest.

• Areas at high latitudes have the warmest water because they have the longest seasons.

• Areas at low latitudes have the warmest water because they receive the most direct sunlight.

• Areas at low latitudes have the warmest water because they have the least change in temperature throughout the year.

Tags

NGSS.MS-ESS2-6

Which statement best describes how the temperature of the ocean's surface water varies?

• Areas at high latitudes have the coldest water.

• Areas with a low salinity have the coldest water.

• Areas close to the poles have the warmest water.

• Areas with a high density have the warmest water.

Tags

NGSS.MS-ESS2-6

How do conditions change as the depth of the ocean water increases?

• temperature decreases and pressure increases

• temperature increases and pressure decreases

• temperature increases and pressure increases

• temperature decreases and pressure decreases

Why are people not able to scuba dive to the deepest parts of the ocean?

• As you go deeper into the ocean, temperature decreases and pressure increases too much for a body to withstand.

• As you go deeper into the ocean, temperature increases and pressure increases too much for a body to withstand.

• As you go deeper into the ocean, temperature and pressure increase too much for a body to withstand.

• As you go deeper into the ocean, temperature and pressure decrease too much for a body to withstand.

Tags

NGSS.MS-ESS2-4