Across
- 2. an upward force on a less dense object in a denser material
- 4. (boundaries) spreading zones along some plate margins where plate sections are moving apart
- 5. a contact force that acts to squeeze or crush an object or substance
- 7. forces acting in opposite directions on different parts of the same object or substance
- 8. any kind of shaking of the ground measurable by seismic instruments
- 9. any change in shape of a solid under stress
Down
- 1. forces that act to pull an object apart
- 3. (boundaries) places where plates slide past each other in opposite directions along long cracks in the crust
- 5. (boundaries) zones of collision or subduction where plates are moving toward each other
- 6. a force exerted inside a material