Name:
Pd.
Date:
How the Earth Was Made: the Ring of Fire
While watching the movie video, answer the follow questions.
#
Question
1 How much of the world’s volcanoes are found
along the Ring of Fire?
2 Why does the study of volcanoes around the
Ring of Fire start in Alaska?
3
What type of volcano is Augustine Volcano?
4
Why is a blocky lava an important clue to the
explosiveness of a volcano?
5
What happens when the gas in magma is unable
to escape?
6
What happens when the upward energy of an
eruption column decreases?
7
What is the presence of hornblende in the rock
an important clue?
8
What is the surprising find made in the
fumaroles at Mt. Lassen?
9
What is the process that moves rock and
seawater down into the Earth?
10
What percent of the world’s earthquakes occur
around the Pacific Rim/Ring of Fire?
What is the evidence that is ¼ mile inland
regarding the seriousness of the earthquakes?
11
12
13
What is one of the major hazards associated
with megathrust earthquakes?
What is the clue scientists found about the Ring
of Fire’s megathrust earthquakes?
14
About how deep is the trench by Alaska?
15
What are scientists using to track the movement
of plates around the Ring of Fire?
What role do convection currents play in plate
tectonics?
16
17
18
19
20
How hot was the water coming out of the black
smokers?
What is the major feature that keeps the plate
movement alive?
To what location are parts of California, Baja
Mexico and the Hawaiian Islands moving?
What is the ultimate process by which plates
move?
Answer
Geolog
y
Name:
Header
KEY
Pd.
Date:
How the Earth Was Made: the Ring of Fire
While watching the movie video, answer the follow questions.
#
Question
Answer
1 How much of the world’s volcanoes are found
¾
along the Ring of Fire?
2 Why does the study of volcanoes around the
75% of all volcanoes in the US; OR northern most portion of
Ring of Fire start in Alaska?
the plate
3
What type of volcano is Augustine Volcano?
stratovolcano
4
Why is a blocky lava an important clue to the
explosiveness of a volcano?
thicker, more viscous
5
What happens when the gas in magma is unable
to escape?
giant explosions or violent eruptions
6
What happens when the upward energy of an
eruption column decreases?
the column of rock and ash collapses
7
What is the presence of hornblende in the rock
an important clue?
it means there is water present under the surface
8
What is the surprising find made in the
fumaroles at Mt. Lassen?
contain C-12, signature for phytoplankton
9
What is the process that moves rock and
seawater down into the Earth?
subduction
10
What percent of the world’s earthquakes occur
around the Pacific Rim/Ring of Fire?
What is the evidence that is ¼ mile inland
regarding the seriousness of the earthquakes?
90%
What is one of the major hazards associated
with megathrust earthquakes?
What is the clue scientists found about the Ring
of Fire’s megathrust earthquakes?
tsunamis
14
About how deep is the trench by Alaska?
21,000 feet
15
What are scientists using to track the movement
of plates around the Ring of Fire?
What role do convection currents play in plate
tectonics?
GPS
How hot was the water coming out of the black
smokers?
What is the major feature that keeps the plate
movement alive?
over 750 degrees
To what location are parts of California, Baja
Mexico and the Hawaiian Islands moving?
What is the ultimate process by which plates
move?
Alaska
11
12
13
16
17
18
19
20
boulders laid over like dominoes from wave action, lifted the
land
depth of earthquakes
they move the plates
mid-ocean ridges
convection