Salinity Knowledge Check Day 1

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)

Tags

NGSS.MS-PS1-1

What is the scientific name for salt? 

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

The amount of salt found in water is -

• temperature
• salinity
• pollution
• 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

Which number represents the Arctic Ocean?

• 7
• 2
• 4
• 9

Which number represents the Atlantic Ocean?

• 7
• 2
• 4
• 9

Which number represents the Indian Ocean?

• 7
• 2
• 4
• 9

Which number represents the Pacific Ocean?

• 7
• 2
• 4
• 9

Which are examples of increasing 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

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