• What is the hydrologic cycle? What is the source of energy that powers the cycle
• what are the three main zones of a river system?
• what are the foctors that determine the flow velocity of a stream?
• The work of a stream includes what tree processes?
• what are the two general types of stream valleys and some features associated with each?
• How are deltas,natural levees alluvial fans similar?How are they different?
• Why do floos occur? what are some basic flood-control strategies?
• why is groundwater important?
• What is groundwater, and what factors influence its storage and movement?
• How do springs,geysers,wells, and artesian systems form?
• What are some environmental problems associated with groundwater?
• What features are produced by the geologic work of groundwater?
What is karst topography?