Properties of Seawater Review

This states that the ions dissolved in seawater are found in the same proportions everywhere in the world.

• Rule of Constant Proportions

• Rule of Acidification

• Rule of Adhesion

• Rule of Solubility

The amount of salt dissolved in sewater is

• acidification

• salinity

• cohesion

• adhesion

What happens to the density of the seawater as temperature decreases?

• it increases

• it decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which two solutes make up the largest percentage of dissolved material in seawater?

• sodium, sulfate

• sodium, chloride

• oxygen, chloride

• chloride, magnesium

What happens to pressure the deeper into the ocean you go?

• it increases

• it decreases

Which process can remove pure water from seawater?

• increasing temperature

• increasing salinity

• evaporation

• precipitation

What is salinity?

• The property of containing salt

• The amount of suspended solids

• Describes the condition of the water

• Describes how acidic or basic water is

Answer explanation

Salinity refers to the property of containing salt in water. It is a key factor in determining the water's chemical composition and affects aquatic life, making "the property of containing salt" the correct choice.

How could salinity increase or decrease?

• Removal of pure water.

• Increase in a variety of dissolved gases.

• Addition of pure water.

• Increase the pH of seawater.

Answer explanation

Salinity increases with the removal of pure water, concentrating salts. Conversely, adding pure water dilutes the salinity, decreasing it. The other options do not directly affect salinity.

Salinity is measured in parts per ___________.

• ten

• hundred

• thousand

• hundred thousand

Answer explanation

Salinity is commonly measured in parts per thousand (ppt), which indicates the concentration of salt in water. Therefore, the correct answer is 'thousand'.

As the temperature of seawater (decreases, increases), it’s density (decreases, increases).

• decreases, increases

• increases, increases

• decreases, decreases

• increases, decreases

Answer explanation

As seawater temperature decreases, its density increases. This is because colder water is denser than warmer water, leading to the correct choice: decreases, increases.

Tags

NGSS.MS-PS1-4