Earth Science: Earth Materials and Processes, Book F

Section 1: Volcanoes and Earth's Moving Plates

Section 1 Self-Check Quiz-Eng.

1
A volcano is an opening in Earth that erupts__________.
A)gases
B)ash
C)lava
D)all of the above
2
A pyroclastic flow is__________.
A)an opening in the side of a volcano
B)a type of lava flow
C)another form of precipitation
D)hot volcanic ash and debris that rushes down the side of a volcano
3
Sulfurous gases emitted by volcanoes __________.
A)can mix with water vapor and form acid rain
B)are good for the environment
C)are contained totally within lava flows
D)help plants grow
4
What causes magma to rise to the surface?
A)Magma is less dense than rock.
B)Magma is more dense than rock.
C)The rock forces the magma upward.
D)A force pulls the magma upward.
5
What is the difference between lava and magma?
A)They originate from different places.
B)They are made of different types of rock.
C)After magma reaches the surface it's called lava.
D)They are different colors.
6
What is a vent?
A)the opening in a volcano
B)the steep depression around a volcano's opening
C)a small fissure on the side of a volcano
D)the remains of an eroded volcano
7
Magma originates in which layer of Earth?
A)mantle
B)core
C)inner core
D)crust
8
Volcanoes often are found in areas on Earth where __________.
A)mountains are found
B)rivers are found
C)plates collide
D)plates fit together perfectly
9
Islands like Iceland are often formed due to __________.
A)all of the above
B)plate movement
C)cooling lava flows
D)rifts in the Earth's surface
10
Convergent plate boundaries __________.
A)don't produce volcanoes
B)create volcanoes that are not as violent as others
C)force one plate beneath Earth's surface
D)spread apart Earth's surface
11
The Hawaiian Islands are formed because of __________.
A)converging plates
B)hot spots
C)diverging plates
D)subduction
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