Types of waves

• magnitude refers to the ____ of ____ erupted?

  amount, material
• intensity refers to the ____ at which material is ____?

  speed, erupted
• both ____ and ____ must be considered when ____ ____ of an eruption?

  magnitude, intensity, assessing explosivity
• explosivity is the volume of ___ ____, the height ___ ____ reach, and _____?

  material erupted, ejected materials, duration