| A | B |
|---|
| Convergent | At ___ boundaries, volcanoes tend to erupt more violently. |
| Divergent | Mid-Atlantic ridge where plates move apart is called a ___ boundary. |
| Hot spot | the boundary between Earth's mantle and core create a ____ |
| crater | a steep-walled depression around the vent is called a __ |
| vent | volcanoes form when magma flows out of a surface opening called a ____ |
| granitic | high-silica magma is called ____ |
| basaltic | low-slilca magma is called _____ |
| tephra | bits of rock or solidified lava is called ____ |
