1. Choose a feature of the ocean floor. Describe how you would model this feature. How would your model illustrate the processes above and below Earth's surface that shaped the feature? Did these processes shape the feature quickly or slowly? Did these changes happen on a large scale or on a small scale? How did the size of the change result from the type of process that caused the change? (6 points)

2. Choose a landform found on one of Earth's continents. Describe how you would model this landform. How would your model illustrate the processes above and below Earth's surface that shaped the landform? Did these processes shape the feature quickly or slowly? Did these changes happen on a large scale or on a small scale? How did the size of the change result from the type of process that caused the change? (6 points)

3. The third model you build will illustrate convection in Earth's mantle. Research the second law of thermodynamics. How does the process of convection relate to this scientific law? (3 points)

4. Research evidence you could use to inform your model of Earth's mantle. This evidence could include:

• Maps of Earth's three-dimensional structure, obtained from seismic waves
• Records of the rate of change of Earth's magnetic field (as constraints on convection in the outer core)
• Identification of the composition of Earth's layers, from high-pressure laboratory experiments

List at least three sources of evidence you will use to inform your model. (3 points)

5. Describe how you will model Earth's interior to illustrate the cycling of matter by thermal convection. (2 points)