Physical Systems Extra Credit Test

1. Subduction is the physical process in which heavy oceanic plates slide under continental plates.

• true
• false

Plate tectonics is the theory that the continents were once joined together and then slowly drifted apart.

• true 
• false

Erosion is an external force that is constantly changing the surface of Earth.

• true
• false

The biosphere cannot exist without interaction with the atmosphere and hydrosphere.

• true
• false

The main reason for the creation of desalination plants is

• to provide freshwater to support human activities
• to promote jobs in high-tech industries and decrease agricultural careers.
• to expand trade exports of excess salt and brine processing.
• to provide economic stability to undeveloped countries.

Which internal process leads to earthquakes in places like California?

• plating
• weathering
• faulting
• eroding

Which external force most likely formed the Great Lakes?

• Plate separation made the ground sink
• Strong winds wore down the ground
• Rivers eroded the ground
• Glaciers scraped the ground

The Andes Mountains were created by the forces of

• erosion
• inversion
• precipitation
• subduction

The sun activates the water cycle by

• condensing water in lakes and rivers.
• causing weather systems to occur.
• evaporating water from the surfaces of bodies of water.
• causing precipitation

What three areas of Earth work together so life in the biosphere thrives?

• the lithosphere, mesosphere, and stratosphere
• the lithosphere, hydrosphere, and atmosphere
• the troposphere, mesosphere, and lithosphere
• the hydrosphere, mesosphere, and atmosphere