Tableof Contents Lesson 1Planet Earth Lesson 2The Ground We Stand Upon Lesson 3The Earth’s Surface Lesson 4Erosion / Deposition Lesson 5Sediments / Fossilization Lesson 6Volcanism / Deformation of rocks / Continents Lesson 7Metamorphism / Radioisotope Decay Lesson 8Ways to date the Earth Lesson 9Great geologic events of the past Lesson 10Questions people ask The Geology Book The Geology Bookby Dr John D Morris Lesson 4 Erosion / Deposition Textbook: The Geology Book Text: pp. 28-35 Scripture: Genesis 8 Vocabulary Words: Law of disintegration decomposition cavitation kolk turbidite sedimentation Questions: List and describe the five main causes of erosion. How many types of erosion can you observe happening around where you live? Research various large hurricanes that have happened in the past few years. How much damage did each one do? Describe the rapid erosive processes (three are discussed). What is a “delta?” How is a turbidite formed? What causes a tidal wave (tsunami)? Activity: This is week 2 of the experiment started in the last lesson. Has your mound decreased any? What caused this decrease? Additional resources: Eroding ages Canyon creation Answers: Rain; Ice; Plants and animals; chemicals; ocean waves Allow students to do their own research. Cavitation occurs when tiny bubbles in moving water explode inwardly; plucking is where rocks are picked up by moving water; kolk is like an under-water tornado that breaks up rock. Slowing water from a river into a larger body of water deposits its sediments onto the sea floor First, an event such as an earthquake starts a mud flow underwater. Next the mud flow spreads out. Eventually the mud flow hardens into a layer of rock. An underwater earthquake or volcanic eruption causes a shock wave of energy to race through the water. As the wave nears the shoreline, it becomes a wall of water which slams into the shoreline.