7th Hour SOL Review Quiz

The surface of the sea is not level due to all of the following except – 

• Salinity
• Tides 
• Winds
• Currents

The accumulated salts in seawater make the seawater much more dense than fresh water. One of the characteristics of salt water is that it has – 

• Ninety elements are easily extracted from a.  Ninety elements are easily extracted from seawater
• Decrease buoyancy for swimmers
•  Higher levels of dissolved oxygen than fresh water
• a lower freezing point than fresh water

The diagram shows that as life forms changed on Earth so did the composition of the atmosphere. The correct order of these changes over geologic time is - 

•  2, 3, 1, 4
• 2, 3, 4, 1
• 3, 2, 4, 1
•  3, 4, 2, 1

Fish are abundant in areas where the ocean is upwelling because it - 

• causes currents that carry fish into the area
• causes surface turbulence that attracts fish
• brings nutrients to the surface
• changes tidal flow in that area

Which factor would best explain why Charlottesville is clear while Norfolk has mist?  

• Pressure
• Humidity
• Temperature
• Wind speed

A boat will float higher in the Atlantic Ocean than in the Potomac River because ocean water has - 

• a lower freezing point
•  more oxygen in it
• more organisms in i
• a greater density

On weather maps, there are lines with tiny triangles on one side. This represents -

•  cold air moving opposite the direction the triangles point
•  warm air moving opposite the direction the triangles point
• warm air moving in the direction the triangles point
• cold air moving in the direction the triangles point

Which statement correctly identifies wind motion between pressure areas?

• High to low
• Low to high
• Low to low
• High to high

All of the following features of the ocean indicate tectonic activity except - 

•  abyssal plains
• seamounts
• trenches
• mid-ocean ridges

Which element in Earth's atmosphere is essential for human life and is extremely rare or nonexistent in the atmospheres of other planets in our solar system?

• Oxygen
• Helium
• Carbon dioxide
• Nitrogen