1. How Does Earth’s Surface Change?

2. Which are the main layers of the earth? A. Lava, crust, core B. Crust, mantle, core C. Inner core, outer core, mantle D. Earthquakes, volcanoes, mountains

3. Which of the following best describes the difference between Earth’s inner core and the outer core? A. The inner core is solid; the outer core is liquid. B. The inner core is liquid; the outer core is solid. C. The inner core is made of metals; the outer core is made of lava. D. The inner core is made of nickel; the outer core is made of iron.

4. 3. Which is a constructive force? A. Waves tearing away sea cliffs. B. Glaciers scraping mountains. C. Rivers washing soil from a field. D. Rivers depositing sediment.

5. 4. Which does not cause weathering? A. Water B. Wind C. Ice D. Rivers depositing soil.

6. 5. First, wind picks up sand. Then the sand is blown against a cliff and breaks in half. Finally, the wind slows and sand falls to the ground. The sand was A. First eroded, then weathered, and finally deposited. B. First eroded, then deposited, and finally weathered. C. First deposited, then eroded, and finally weathered. D. First weathered, then eroded, and finally deposited.