Unit 2.3 Review

What are the 6 ions that make up the salt in salt water?

• Sodium, Chloride, Sulfate, Magnesium, Calcium, Potassium

• Sodium, Chloride, Nitrate, Magnesium, Calcium, Potassium

• Sodium, Chloride, Sulfate, Magnesium, Iron, Potassium

• Sodium, Chloride, Sulfate, Magnesium, Calcium, Iron

Tags

NGSS.MS-PS1-1

What is the ocean's average salinity?

• 1.5ppt

• 25ppt

• 35ppt

• 4.0%

How is salinity measured (what is the unit and what does the unit stand for)?

• Parts per million (ppm)

• Parts per thousand (ppt)

• Grams per liter (g/L)

• Milligrams per liter (mg/L)

Which of the following are 5 factors that can change salinity in nature?

• Precipitation, Evaporation, River inflow, Ice formation, Wind

• Precipitation, Evaporation, River inflow, Ice melting, Wind

• Precipitation, Evaporation, River inflow, Freezing, Ocean currents

• Precipitation, Evaporation, River inflow, Ice melting, Freezing

Tags

NGSS.MS-ESS2-4

What is the salinity along the tropics? Why?

• Higher due to high evaporation rates

• Lower due to high precipitation rates

• Higher due to low evaporation rates

• Lower due to low precipitation rates

Tags

NGSS.MS-ESS2-6

What is the salinity at 30 degrees N/S? Why?

• Higher due to high evaporation rates

• Lower due to high precipitation rates

• Higher due to low evaporation rates

• Lower due to low precipitation rates

Tags

NGSS.MS-ESS2-6

What is the salinity at 50 degrees N/S? Why?

• Higher due to high evaporation rates

• Lower due to high precipitation rates

• Higher due to low evaporation rates

• Lower due to low precipitation rates

Tags

NGSS.MS-ESS2-6

What is the salinity at the North Pole during the Summer time? Why?

• Higher due to ice formation

• Lower due to ice melting

• Higher due to low evaporation rates

• Lower due to high evaporation rates

Where did the salt originally come from?

• Volcanic eruptions and weathering of rocks

• Marine organisms and weathering of rocks

• Volcanic eruptions and marine organisms

• Weathering of rocks and ocean currents

Tags

NGSS.MS-ESS3-1

What are 3 ways salts are removed from the ocean?

• Evaporation, Ice formation, Marine organisms

• Evaporation, Ice melting, Marine organisms

• Evaporites, Sea spray, Consumption of marine animals.

• Evaporites, Ice melting, Sedimentation