Ocean Density & Layering

 As the temperature of ocean water changes from 10 to 30 degrees C, how does the density change?

• The water becomes more dense
• The water becomes less dense
•  The density does not change 
•  It is impossible to predict

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

 The density of ocean water is influenced by what two factors?

•  Salinity and temperature
• Water color and chlorophyll
•  Dissolved gases and dissolved solids
•  Dissolved carbon and trace elements

The temperature and salinity of the ocean change the most:

• Near the surface
•  Near the bottom
•  Near Antarctica
• Near the equator

Tags

NGSS.MS-ESS2-6

 What is true about the water on the bottom of the ocean?

•  It is the saltiest water found in the ocean
• It is the densest water found in the ocean
•  It is not frozen because sunlight warms it up
•  It does not move

What is a thermocline?

• A rapid change in temperature with depth

• A rapid change in temperature with latitude

• A rapid change in salinity with depth

• A rapid change in density with depth

Warmer water will remain ______ because ________

• at the surface; lower density than cool water

• at the surface; higher density than cool water

• deep; lower density than cool water

• deep; higher density than cool water

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-4

What is stratification?

• Layering of ocean water based on its properties (temperature, salinity, density, etc.)

• Temperature differences with depth

• Salinity differences with depth

• Mixing of ocean water despite its different properties

(vocab) What is density?

• mass-per-unit volume
• mass-per-unit area
• weight-per-unit mass
• weight-per-unit volume

T4 - As salinity  increases

• Density increases
• Density decreases

Tags

NGSS.MS-PS3-4

T4 - True or False Salinity increases as ocean depth increases.

• True
• False