Across
- 4. Relative dating principle that states younger rock layers form on top of older rock layers
- 5. Differences in temperature causing movement of fluid as heat transfers to cooler areas. Contributes to plate movement on Earth's surface.
- 6. The volcanoes surrounding the Pacific Ocean. Also, where most volcanic/earthquake activity is found.
- 7. The theory that states that Earth's outer shell is divided into several plates that move over the Earth's mantle
- 8. Layers of rock that have fragments of other rock layers is younger
- 9. When plates move in opposite directions and away from each other
- 10. Any layer that cuts through another layer is younger
Down
- 1. When plates come together and collide with each other
- 2. Where does the source of material come from to form new tectonic plates?
- 3. The theory proposed by Alfred Wegener in 1912 that states continents slowly move across the Earth's surface
- 7. When plates rub as they slide past each other