Crossword

3. having solidified from lava or magma
7. the branch of science which deals with celestial objects, space, and the physical universe as a whole.
9. the branch of science that deals with the physical and biological properties and phenomena of the sea
10. bang theory the cosmic explosion that marked the beginning of the universe
12. the science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
13. the branch of science concerned with the origin, small-scale structure, and composition of rocks.
14. the branch of science concerned with earthquakes and related phenomena.
15. the force that attracts a body toward the center of the earth, or toward any other physical body having mass

1. the physics of the earth
2. system the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
4. the branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations.
5. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization
6. the branch of science concerned with fossil animals and plants.
8. the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries
11. drift the gradual movement of the continents across the earth's surface through geological time