Big Idea Vocabulary

Rock that makes up the Moon's and Earth's outermost layers.

• Crust

• Mantle

• Inner core

• Outer core

A sudden shaking of the rock that makes up Earth's crust.

• Volcano

• Earthquake

• Hurricane

• Erosion

The weathering and removing of rock or soil.

• weathering

• erosion

• volcano

• hurricane

A process that breaks rocks into smaller pieces.

• Weathering

• Volcano

• Hurricane

• Erosion

A tool that graphs seismic waves as wavy lines and helps scientists detect earthquakes.

• Barometer

• Thermometer

• Seismograph

• Balance

A violent, strong, swirling storm with strong winds and heavy rains.

• Volcano

• Blizzard

• Hail

• Hurricane