New York Science Grade 7

Section 2: Volcanoes

Section Quizzes - English

1
What do colliding plates have to do with volcanoes?
A)The plate that gets pushed underground melts to become magma.
B)Colliding plates have nothing to do with volcanoes.
C)The plate that gets pushed up creates a volcano.
D)The plates that separate create a volcano.
2
What kind of lava is most explosive?
A)lava that is high in silica
B)lava that is low in silica
C)lava that is high in iron
D)lava that is high in magnesium
3
What causes the broad, gently sloping sides of a shield volcano?
A)basaltic lava
B)highly viscous lava
C)ocean floor spreading
D)colliding plates
4
What is tephra?
A)lava that cools beneath the surface before an eruption
B)lava that has cooled in midair after an eruption
C)very fluid lava
D)lava that is slowly released from fissures
5
Why don't cinder cone eruptions last long?
A)because cinder cone eruptions are caused by low gas content.
B)because gas content is not involved with cinder cone eruptions
C)because cinder cone eruptions are caused by high gas content
D)because cinder cone eruptions are caused by high water content.
6
How would you describe lava with a high viscosity?
A)fluid
B)smooth
C)thick
D)watery
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