Do #1, 2, 3 Plus TWO MORE

1. What is Newton's law of gravitation? Explain the meaning of each term or constant.

2. What is the "International Gravity Formula"? What does each term signify? What is the formula used for?

3. Derive a formula for the gravitational effect of buried sphere. Assume a gravity profile over the center of the sphere.

4. Explain two methods for separating regional and residual fields. What are the pros and cons of each method?

5. Write a brief proposal for an MS thesis based on gravity measurements. Include purpose, geological background, field program, data analysis and expected results.

6. The gravitational acceleration on the surface of the moon is 163000 mGals and the mean density is 3340 kg/m^3. The universal gravitational constant is 6.67x10^-11 (m^3)/(kg s^2). What is the radius of the moon in km? (You don't need to do the arithmetic. Just work out he correct expression and check the units.)

7. Compare and contrast gravity and seismic refraction as methods to determine the cross-sectional size and shape of a pluton such as the Exeter diorite.