NC Earth Science Final Review

Subsurface ocean currents continually circulate from the warm waters near the equator to the colder waters in other parts of the world. What is the main cause of these currents? 

• differences in the topography along the ocean floor 
• differences in density of ocean water 
• the rotation of Earth on its axis 
• movement of the jet stream 

What is most responsible for the presence of groundwater in an area? 

• the movement of water from a confined aquifer into surface water 
• the movement of surface water and precipitation through soil and rock
• the movement of water from streams and rivers to watersheds
• the movement of surface water through impermeable rock 

Which is the most common contamination source for freshwater resources? 

• runoff 
• digging wells
• melting of glaciers
• lightning

Metamorphic rocks with a layered or banded look are called —

• foliated
• unfoliated
• striated
• evaporated

The breakdown of rocks and minerals into smaller particles without a change in composition is
called..

• igneous intrusion
• chemical precipitation
• mechanical weathering
• metamorphic foliation

Which layer of the soil profile would be affected the most by weathering and erosion?

• 1
• 2
• 3
• 4

The major disadvantage of using solar panels to generate electricity is that solar panels —

• release toxic fumes into the air
• cannot convert energy efficiently
• are affected by cloud coverage and day length
• produce energy that cannot be stored

Which of the following processes will change a sedimentary rock into an igneous rock?

• Melting and crystallization
• Erosion and deposition
• Deformation and deposition
• Faulting and fracturing

Which more likely to prevent mass-movement events?

• Constructing buildings in stream drainage paths
• Clear-cutting trees from the side of a mountain
• Paving roads next to sloping hills
• Contour plowing of crop areas

Which of the following isn’t a factor/force involved with erosion?

• gravity
• wind
• tension
• water