| A | B |
|---|
| magma chamber | an underground holding pool for hot magma |
| seismograph | scientists use to measure earthquake waves |
| earthquake | a vibration in the Earth's crust |
| crater | a large basin that can form at the top of a volcano |
| vent | a rocky opening in the volcano where the hot magma flows up |
| lava | melted rock that flows onto Earth's surface |
| magma | hot melted rock that is underground |
| core | the deepest layer of the earth |
| epicenter | the point on the Earth's surface that is directly above the focus |
| plates | continent sized slabs of mantle and crust |
| volcano | a mountain formed from lava |
| focus | point underground where movement of the earthquake first takes place |
| fault | a break in the crust where rocks move |
