Chapter 18

• What is ”deep time”?  What does this concept suggest about the processes that form the landscape that we see today?

• Describe the “life cycle” of a grain of beach sand.

• How do oceans redistribute Earth’s heat? How does the atmosphere accomplish this? Do rocks redistribute heat? Which global cycle is most efficient in transferring heat? Why?

• Why is draining an aquifer akin to mining water? How is the water in an aquifer replaced? How long does this process take?

• How would our weather patterns be affected if Earth stopped rotating?

• If copper is worth $8 per kilogram, what is the value of the copper in 10 cubic kilometers of seawater?
  
  
• Identify three ways that water moves between repositories.

• Describe the processes that lead to an ice age? What effect does the formation of large glaciers have on the hydrologic cycle?\

• What are the five variables that describe the weather?

• What are three main kinds of rocks? How do they form?