Sketch a north-facing cross-section (like #3 and 5) along ~10°s latitude from africa westward to the middle of the pacific ocean (~130°w longitude). plate-wise, that would be from the african plate, across the south american and nazca plates, and ending in the middle of the pacific plate - crossing 3 plate boundaries. use the google earth imagery and layers to give the necessary detail so that you include and label the following: sea level significant topographic features of the continents and the seafloor earthquake hypocenters (indicating depth below epicenter) volcanoes plate names and plate boundary locations appropriate vertical and horizontal scales. arrows indicating relative plate motion

Where the main factor that enabled the growth of cities and civilizations was the existence of

Study guide for unit 2 ~ lesson 3 ,4, & 5 test, thursday, january 24th lesson 3 vocabulary erosion - deposition - landform- weathering- short answers 1. how do volcanic islands form? 2.why is deposition likely to occur outside a river bend? 3. in what conditions does soil form fastest? 4. which 2 earth’s systems interact to form a coral island? 5. a beach growing in size is most likely the result of 6. which type of islands are formed when a chunk of land breaks off from a larger landmass? long answers explain how plants can grow in small cracks of rock that do not appear to contain soil. lesson 4 vocabulary pollution - toxic - short answers 1. most farmers pollute soil by purposefully adding 2. what is the benefit of contour plowing? . 3. using nuclear power to produce electricity can cause water pollution by 4. why do scientists predict humans will run out of fossil fuels someday? 5.farmer spray crops with fertilizer and weed killer to the crops grow. how might this affect the hydrosphere? list two different ways you use fossil fuels. 1- 2- what are two other energy sources scientists and engineers are researching? 1- 2- lesson 5 vocabulary decompose- recycling - short answers 1. which of earth’s systems do you interact with when you wash your hands? 2. which of earth’s systems is polluted by exhaust gases from buses pollute? 3. why is it important to dispose of electronic devices properly? 4. where do people interact with all four of earth’s systems?

What are some of the impacts of humans on the earth?