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11.

Divergent plate boundaries after volcanic activity from:

A.	Volcanic islands	B.	New Sea floor
C.	Both (a) and (b)	D.	None of these

12.

A place where two plates usually an oceanic plate and a continental plate collides is called:

A.	Continental zone	B.	Volcanic zone
C.	Subdiction zone	D.	None of these

13.

Magma contains the contents of:

A.	Silica	B.	Aluminum
C.	Magnesium	D.	None of these

14.

Volcanic erupted material when inside the hill/earth/mountain it is called ______ and after it coming out it is called _______.

A.	Lava, magma	B.	Magma, lava
C.	Both (a) and (b)	D.	None of these

15.

Particularly the type of volcano on some man of Jupiter, Saturn, and Neptune is known as:

A.	Shields	B.	Cinder cone
C.	Cryovolcano (ice volcano)	D.	None of these

16.

The smaller cones formed through vents, on the hanks of Hawaii's kilavea are known as:

A.	O	B.	P
C.	PU	D.	All of them

17.

The volcanoes formed by the alternating layers of lava and rock fragments are called:

A.	Cinder cones	B.	Spatter cones
C.	Compostite volcanoes	D.	Shields

18.

Composite volcanoes are also known as:

A.	Stratovolcanoes	B.	Shields
C.	Compound volcanoes	D.	None of these

19.

Stratovolcano forms impressive, snow-capped peak which is often exceeding ______ in height, ______ in area and ______ in volume:

A.	2500 m, 1000 sq. km. 400 km8	B.	1900 m, 800 sq. km, 200 km8
C.	2000 m, 800 sq. km, 200 km	D.	None of these

20.

Composite volcanoes usually erupt in explosive way as, when the viscuss magma rise to a surface it usually cbqs the _____ so in the result _____ will increase resulting in an explosive eruption:

A.	Pressure, crater pipe	B.	Mantle plume, gas
C.	Crater pipe, pressure	D.	None of these