Unit 2 Lithosphere Review

Which type of volcano has broad, gentle sloping sides?

• Cinder cone
• Composite 
• Shield 

Which type of volcano has a quiet eruption? 

• Cinder cone
• Composite
• Shield

Which volcano has layers of alternating magmas

• Cinder cone
• Composite 
• Shield

Which volcano has steep sides

• Cinder cone
• Composite 
• Shield

Which volcano always has explosive eruptions? 

• Cinder cone
• Composite 
• Shield

The youngest part of the ocean floor is found ____.

• where Earth’s magnetic field changes polarity
• near ocean ridges
• where ocean sediments are thickest
• along deep sea trenches

At an oceanic-oceanic divergent boundary, ____.

• new crust is created
• old crust is deformed or fractured
• plates side past one another
• old crust is recycled by subduction

Features found at divergent boundaries include ____.

• island arc volcanoes
• deep-sea trenches
• ocean ridges
• crumpled mountains

Subduction results in the formation of ____.

• a rift valley
• a deep-sea trench
• new continental crust
• a magnetic reversal

Continental-continental plate collisions produce ____.

• very tall mountain ranges
• deep-sea trenches
• rift valleys
• island arcs