Across
- 6. Earth’s plates travel at a rate _____ to be experienced by humans.
- 10. __ can be hard solids or soft solids.
- 11. Earth’s outer layer is divided into sections called ____.
- 13. Alfred Wegener developed a theory of continental movement in part by analyzing the locations of ____ found across the globe.
- 14. GPS technology is used to accurately measure the small distances that plates ____
- 15. In Earth’s ancient past, the continents were connected into ____, including Gondwanaland.
- 18. At ____ plate boundaries, mantle material fills the gap between the plates.
- 19. The plates of Earth’s outer layer ____
Down
- 1. Men and women from different social, cultural, and ethnic ____ work as scientists and engineers.
- 2. At convergent plate boundaries, one plate moves underneath the other plate and ___ into the mantle.
- 3. Earth’s plates move on top of a soft, solid layer of rock called the ____
- 4. A ___ is used by scientists as an idea that may contribute important new knowledge for the evaluation of a scientific theory.
- 5. Geologists look for ___ in landforms and in geologic events in order to better understand Earth.
- 7. Earth’s ____ layer is made of hard, solid rock.
- 8. Geologists learn about Earth’s history by studying rocks and _____ the within them.
- 9. The ___ at which one plate moves can be calculated by dividing the distance the plate travels by the time it took to move that distance.
- 12. Scientists use a range of techniques and tools to gather evidence about plate ____ on the ocean floor.
- 16. At ____ plate boundaries, one plate sinks into the mantle.
- 17. ___ provide evidence that the plates of Earth’s outer layer move.