click below
click below
Normal Size Small Size show me how
Earthquakes/Tsunamis
Topic Four, Lesson 3: Earthquakes and Tsunami Hazards
Question | Answer |
---|---|
a force that acts on rock to change its shape or volume | stress |
stress that stretches rock so that it becomes thinner in the middle | tension |
stress that squeezes rock until it folds or breaks | compression |
stress that pushes masses of rock in opposite directions, in a sideways movement | shearing |
a break in Earth's crust along which rocks move | fault |
the shaking that results from the movement of rock beneath Earth's surface | earthquake |
the measurement of an earthquake's strength based on seismic waves and movement along faults | magnitude |
a giant wave usually caused by an earthquake beneath the ocean floor | tsunami |
the ratio between the size of something and a representation of it; can be used for units of time or distance | scale |