Across
- 4. Instruments used to measure seismic waves
- 5. Natural movements or vibrations that occur when the crust of the earth shifts
- 7. Occur when a gap in earth's surface releases materials such as magma
Down
- 1. Explains how landmarks and natural disasters form and how they are linked together
- 2. Most earthquakes and volcanoes distinct zones around the edge of tectonic plates
- 3. Vibrations mainly caused by the release of energy during an earthquake
- 6. Occurs when there is movement along the floor of the ocean