Ocean Chemistry

Select two reasons as to why salinity can INCREASE

• Evaporation because water is changing into water vapor leaving salt behind.

• Freshwater is added to ocean at the mouths of large rivers as they empty freshwater into oceans.

• Freshwater is added by rain, snow, and melting ice.

• Surface water freezes into ice, leaving salt behind.

Tags

NGSS.MS-ESS2-4

Select two reasons as to why salinity can DECREASE

• Evaporation because water is changing into water vapor leaving salt behind.

• Freshwater is added to ocean at the mouths of large rivers as they empty freshwater into oceans.

• Freshwater is added by rain, snow, and melting ice.

• Surface water freezes into ice, leaving salt behind.

Tags

NGSS.MS-ESS2-4

NaCl (Sodium chloride) is the only kind of salt in the ocean.

• True

• False

Tags

NGSS.MS-PS1-1

Density of seawater is affected by these two factors:

• clarity and color

• hydrogen ions and dissolved oxygen

• transparency and turbidity

• temperature and salinity

Tags

NGSS.MS-ESS2-6

What color of light is absorbed closest to the ocean surface? (not able to be seen below 10 meters)

• Blue

• Red

• Green

• Yellow

Tags

NGSS.MS-PS4-2

Ocean acidification occurs when too much _______________________________ enters the ocean from the atmosphere.

• calcium carbonate

• carbon dioxide

• sulfur dioxide

• nitrogen gas

Tags

NGSS.HS-ESS2-6

As the depth of the ocean water increases, the temperature __________.

• increases

• stays the same

• decreases

• rises

How does salinity change with ocean depth?

• deeper water has lower salinity

• surface water has the highest salinity

• deep water has the highest salinity

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Nemo and other ocean dwelling fish cannot survive in freshwater because......

• freshwater is hypertonic to Nemo's cells and will result in water leaving them causing the cells to shrink

• freshwater is hypotonic to Nemo's cells and will result in water leaving them causing the cells to shrink

• freshwater is hypertonic to Nemo's cells and will result in water entering them causing the cells to swell and burst

• freshwater is hypotonic to Nemo's cells and will result in water enter them causing the cells to swell and burst

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5