Salinity

Which are examples of decreasing salinity?

• Precipitation into the ocean

• Evaporation of water from the ocean

• Mouth of a river dumping freshwater into an ocean

• Glacier melting into an ocean

• Surface water freezing at the poles

Tags

NGSS.MS-ESS2-4

What do we call the measurement of how salty the ocean water is?

• saltiness

• oceanography

• density

• salinity

Ocean water contains dissolved _____________, measure as salinity.

• minerals

• sediments

• salines

• salt

Salinity is based off of what two things?

• water temperature and wave height

• evaporation and condensation

• evaporation and runoff

• water temperature and runoff

Which ocean motion is defined as a continuous flowing of sea water caused by wind, salinity and temperature?

• currents

• waves

• tides

• none of the above

The amount of salt found in water is -

• temperature

• salinity

• pollution

• clarity

Answer explanation

The amount of salt in water is referred to as salinity. It measures the concentration of salts, making salinity the correct choice over temperature, pollution, or clarity.

What is salinity?

• the amount of matter in a specific volume

• the degree of how hot or cold something is

• the landforms of the continent or the oceans

• how much salt is dissolved in a liquid

Answer explanation

Salinity specifically refers to how much salt is dissolved in a liquid, particularly in water. This distinguishes it from other concepts like temperature or landforms, making it the correct choice.

What is the scientific name for salt?

• Sodium Acetate 

• Sodium Chloride 

• Chloride sodium 

• Hydroxide sulfate 

Answer explanation

The scientific name for salt is Sodium Chloride (NaCl), which is composed of sodium and chloride ions. The other options do not represent common salt, making Sodium Chloride the correct choice.

Salinity is

• A type of plankton

• The difference in temperature between surface and deep water

• The amount of salt in sea water

• A type of surface current

Tags

NGSS.MS-ESS2-6

Temperature and salinity are the two factors affecting which type of current?

• Mid-ocean ridges

• Deep Currents

• Surface Currents

• High tide and low tide

Tags

NGSS.MS-ESS2-6