Salinity

What is the temperature, salinity, and density like at the surface zone of the ocean (top) as compared to the deep zone (bottom) of the ocean?

• colder temperature, more salinity, and more dense

• colder temperature, more salinity, and less dense

• warmer temperature, less salinity, and less dense

• Warmer temperature, less salinity, and more dense

Which of the following statements are true? (Select ALL that apply)

• Saltwater is more dense that freshwater

• Freshwater is more dense than saltwater

• Freshwater layers below freshwater because water (H₂0) has more mass than salt (NaCl)

• Saltwater layers below freshwater because the salt molecule (NaCl) has more mass than the water molecule (H₂0)

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

• increases
• decreases
• stays the same
• doubles

Briefly describe the overall relationship between temperature and density.

• Lower temperature water has higher density, warmer water has lower density
• Lower temperature water has lower density, warmer water has higher density

What happens when you increase the temperature of ocean water?

• the density increases
• the density decreases
• the water sinks
• the salinity increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens when you increase the salinity of ocean water?

• the temperature increases
• the salt amount decreases
• the density increases
• the density decreases

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

• increases
• decreases
• stays the same
• doubles

Tags

NGSS.MS-ESS2-4

In addition to salinity, what factor affects the density of seawater?

• depth
• latitude
• temperature
• money

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

What is the scientific name for salt? 

• Sodium Acetate 
• Sodium Chloride 
• Chloride sodium 
• Hydroxide sulfate