Across
- 3. / large single landmass believed to be existing before
- 5. / the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity
- 6. / remains, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth’s crust.
- 8. / a combustible black or brownish-black sedimentary rock
- 9. / Early freshwater aquatic reptiles, found as fossils from the Early Permian Period in South Africa and South America.
- 11. / the slow movement of continents to their current locations
- 13. / a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged
Down
- 1. / a woody plant with a tongue-shaped leaf, reproduces by seeds and thrives in a tropical climate.
- 2. / the process by which new ocean floor is formed near the mid-ocean ridge and moves outward
- 4. / the theory that Earth's outer shell is divided into several plates that glide over the mantle
- 7. / describes the magnetic influence of electric charges in relative motion and magnetized materials
- 10. / relatively hard, naturally formed mineral or petrified matter
- 12. / an underwater mountain range, formed by plate tectonics