Ocean Density and Its Correlation with Ocean Temperature and Salinity

Q.

Why is the sea water denser than fresh water?

Q. The ocean density is directly proportional to ______.

1. salinity
2. current
3. temperature
4. gravity

Q. Assertion [A]: Ocean temperature remains constant beyond the depth of 1000 m.

Reason [R]: Vertical distribution of temperature in the deep ocean is controlled by density driven water movements.

Read the above given statements and select the option that is true.

1. Both A and R are true. R is the correct explanation for A.
2. Both A and R are true. R is the incorrect explanation for A.
3. A is true but R is false.
4. Both A and R are false.

Q. The ocean density is inversely proportional to __________.

1. Salinity
2. Current
3. Temperature
4. Gravity

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The density of water will ________ with the increase of its salinity.

1. decrease
2. increase
3. remain the same
4. not change

Q. Which of the following quantities has a standard unit of measurement of gram per cubic centimeter?

1. Pressure
2. Density
3. Volume
4. Salinity

Q. _________ is the continuous body of saltwater that is contained in enormous basins on Earth’s surface.

1. Sea
2. River
3. Ocean
4. Lake

Q. Assertion [A]: Saltwater is more dense than freshwater.

Reason [R]: Saltwater has less mass for the same amount of volume when compared to freshwater.

Read the above given statements about salinity and density and select the option that is true.

1. Both A and R are true. R is the correct explanation for A.
2. Both A and R are true. R is the incorrect explanation for A.
3. A is true but R is false.
4. Both A and R are false.

Q. Which among the following statements is/are true about the role of oceans in the global water cycle?

1. Oceans are the main thermal regulating element of the climate system.
2. Nearly 86% of global evaporation comes from the oceans.
3. The water cycle has a significant impact on ocean salinity, and thus density, circulation, stratification, and mixing.
4. Alterations to the global water cycle cannot be studied due to technological and logistical constraints.

Q. What is the equation of density?

1. Mass/Volume
2. Volume/Mass
3. Mass/Temperature
4. Temperature/Volume