WorksheetsUnit 6 practice Test
Total questions: 11
Worksheet time: 7mins
Why is there high salinity in Ocean water near the Equator?
High levels of evaporation
Deep ocean currents & surface ocean currents are caused by-
density differences caused by changes in temperature & salinity
What causes oceans to become less salty?
Increased fresh water runoff and ice melting
Formation of Sea ice
Nutrient pollution from farms
Toxic oil spills
What human activity releases Co2 into the atmosphere and is the main cause of ocean acidification
Burning fossil Fuels
Agricultural runoff
Carbon Dioxide (Co2)
ocean PH
This graph demonstrates that
Co2 in the ocean increase at the same rate as Co2 in the atmosphere, which decrease ocean PH levels
That pH of the ocean increases as the atmospheric CO2 increases
That there is no correlation between pH of the ocean and atmospheric CO2
Ocean PH increases as ocean Co2 increases
Coral & shellfish are sensitive to ocean temperatures and the amount of available carbonate. What can you predict will happen if ocean temperatures continue to rise and levels of carbonate continue to fall?
Bleaching of coral reefs & reduction of shellfish populations
Larger varieties of coral will form
Coral reefs will form in deeper parts of the ocean
Shellfish will move to other parts of the ocean
El Nino brings unexpected weather conditions to different regions of the United States. It will cause dry weather in the south when its normally wet, and lots of rain in the desert when normally dry. What is the best way to describe this phenomenon?
Melting of polar ice caps
Varied atmospheric (weather) conditions
Summers get longer
Increase volcanic erruptions
Which answer correctly labels each of the seafloor features seen in this image?
1. Continental shelf
2. Continental Slope
3. Continental Rise
4. Abyssal Plain
1. Continental shelf
2. Continental rise
3. Continental Slope
4. Abyssal Plain
1. Abyssal Plain
2. Continental Slope
3. Continental Rise
4. Continental Shelf
1. Continental slope
2. Abyssal Plain
3. Continental Shelf
4. Seafloor spreading
Seafloor Spreading is the process that takes place at the Mid Ocean Ridge and causes the seafloor to widen over geologic time.
TRUE
FALSE
