Volcano Basics Review

Once magma reaches the surface, it is called _.

• silica

• lava

• rock

Hot spots can occur _.

• only at plate boundaries

• far from plate boundaries

• only under the middle of plates

Volcanic belts form along the boundaries of Earth's​ (a)  

• plates
• islands
• rivers

A volcano that is no longer erupting but is likely to erupt again in the future is called ​ (a)  

• dormant
• extinct
• active

When a volcano is no longer erupting, and it is unlikely for it to erupt in the future, is called ​ (a)  

• extinct
• active
• dormant

When a volcano still erupting, it is called ​ (a)  

• active
• dormant
• extinct

When a volcano erupts quietly, what kind of mountain forms? ​ (a)  

• shield volcano
• cinder-cone volcano
• composite volcano

 When a volcano erupts explosively, what kind of mountain is formed? ​​ (a)  

• cinder-cone volcano
• shield volcano
• composite volcano

When a volcano erupts explosively and quietly, it will make a ​​ (a)  

• composite volcano
• shield volcano
• cinder-cone volcano

Magma rises to the surface because it is less dense than solid rock

• True

• False