8th grade science test 2 | Baamboozle - Baamboozle

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abed 8th grade science test 2

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what is the most abundant element in the earth's crust?

oxygen

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what is the area between the upper mantle and the lower mantle?

transition zone

15

What consists primarily of erupted volcanic ash and rock fragments held loosely together?

Conder-cone volcano

15

What type of volcano probably will not erupt again?

Extinct volcano

15

What type of volcano that is inactive but can erupt again?

Dormant volcano

15

What is the fracture sone between stationary and moving rocks called?

Fault

15

What is the bottom of the mantle called?

Core-mantle boundary or Gutenberg discontinuity

15

What is the boundary line between the crust and the mantle called?

MOHO

15

What type of volcanic ejecta: hardened lava that forms rough jagged rocks with a crumbly texture?

AA

15

What type of volcanic ejecta: solid particles less than 2mm in diameter

volcanic ash

15