1. Wave Action Earth’s Waters Chapter 4.1 Pages 114-121

2. Wave Formation (P114-115½ ) 1.What is a Wave? a)How do most waves form? b)List the 3 things wave size depends on. 2.Do waves move water toward shore? a)What actually happens to objects as a wave passes?

3. Describing Waves (P116-117) 1.Define a Crest. 2.Define a Wavelength. 3.Define Frequency. 4.Define a Trough. 5.Define Wave Height. 6.What happens to waves as they reach shore? 7.What is Undertow?

4. The Shore & Erosion (P118-120) 1.What effect does Longshore Drift have? a)How can you escape a Rip Current? 2.What is Erosion? a)How does erosion affect beaches? 3.Describe 3 ways to reduce beach erosion. a)Are Groins a positive choice?

5. Tsunamis (Page 121) 1.How do Tsunamis compare to regular waves in size and strength? a)Describe how tsunamis form.