Benchmark Unit 8.1

(n) Earth's outermost layer.

• crust

• magnitude

• seismographs

• tectonic plates

(n) Greatness of size, strength, or importance

• magnitude

• seismograph

• colllide

• crust

(n) a device that measures the strength of an earthquake

• magnitude

• seismograph

• tectonic plates

• crust

(n) Sections of the Earth's crust that move due to convection currents

• magnitude

• seismograph

• tectonic plates

• crust

(v) to come together with great force

• magnitude

• collision

• tectonic plates

• destruction

damaging something so badly that it cannot be repaired

• magnitude

• collision

• tectonic plates

• destruction

continuous slight shaking movements

• vibrations

• collision

• tectonic plates

• destruction

destroyed something completely

• vibrations

• collision

• annihilated

• destruction

an event that causes great harm and suffering

• vibrations

• calamity

• annihilated

• destruction

a loud mixture of noises that lasts for a long time

• din

• collision

• annihilated

• destruction